It was a hot summer day and Tom was spending it drinking mojitos with his wife Esther and their best friends, Mark and Susan, around the pool in the backyard. The men were lying in the sun and the women were swimming lazily in the warm water, chatting and laughing about things that happened in their youth.
All four of them were friends since high school and they were married soon after they graduated from college. Now they were among the most important personalities of their small town, Tom being the town mayor and Mark the pastor of the community and both their wives were teaching at the local high school. They were in their early '40s and in good shape due to the outdoor activities they were doing together frequently. Both couples had children, Tom and Esther a boy, Rudy, 18 years old and Mark and Susan a girl, Rebecca, 19 years old. The kids were also very good friends and their parents used to joke often about marrying them.
The conversation was about the vacation Tom and Esther had two years before in Greece, when their friends couldn't make it due to the passing away of Susan's mother.
"Man, you should have seen all those beauties. It was full of German and Russian girls and the best part is they were all topless! Every way you looked around - tits! All sizes and shapes! It was like tit heaven!" laughed out loudly Tom.
"And you, Susan," asked Esther, "you weren't jealous?"
"Not at all, my dear," smiled Esther back, "I was topless myself! And anyway, he was suffering too much from a constant hard-on caused from starring too much at all those women!"
After saying that, Esther started to whisper something at Susan's ear and both started giggling.
"What is it?" asked Mark curious.
"What are you both laughing about?"
"Girl talk," blushed his wife.
"In fact, I think I can say it out loud, since I can see that both guys liked the story," said Esther looking at the tents which started to rise in the men's shorts.
"I was telling Susan that there was a positive side to Tom's hornyness, since we were fucking two or three times a day, not to mention two occasions when I gave him blowjobs on the beach."
By now both men were at full erection and their shorts were on the verge of ripping apart. Susan and Esther were laughing hard, starring from the water at those tents. Their faces were flushed and one could see that even in the warm water their nipples were hard from the sexual tension brought on by the conversation. Susan's breathing was even more agitated and, leaving the shame beside and encouraged by the mojitos, she provoked her good friend:
"I don't believe you have the guts to stay topless on a public beach! Hell, you don't have the guts to take of your top here, between friends!"
"You wanna' bet?" asked Esther.
"OK, why not, I have nothing to lose," smiled Susan back.
At this point Esther's face became serious.
"Then we should bet on something! How about the loser will do whatever the winner requests of her until sunset?"
"Like preparing mojitos and such or do you have something else in mind?" said Susan, presenting her most innocent expression.
"I said whatever, no refuses are allowed for no matter what reasons."
"I think I can take this bet, no way are you taking off your top in front of a man, other then your husband."
Hearing this, a devilish grin started to appear on Esther's face. The men had slowly approached the girls during this conversation and were now sitting on the edge of the pool, with their feet in water and their dicks almost springing out of their shorts. Both of them, feeling a little tipsy from the alcohol and hormones, started humming Joe Cocker's song "You can leave your hat on."
Susan, as for intimidating Esther, placed herself between the men's legs and joined them in singing. The level of sexual tension was almost unbearable.
Esther, who was a petite slender blonde with generous tits, started to slowly take down the left strap of the bikini top, followed by the right strap. Her upper half was out of the water, so everybody could see clearly this partial strip tease. By now, the bikini top was fastened only in the back and the public started singing more loudly.
Esther could even see that her husband inserted his right hand in his shorts and was caressing himself. Mark, seeing how bold Tom was, followed his example.
Esther was feeling like in an out of body experience. It was like other hands were undressing her, while she was caressing her nipples through the fabric of the bikini top.
Even Susan, who was as innocent as a pastor's wife should be, was feeling wet down there, and it wasn't the water. Her hands were holding onto both men's legs and she started to caress them, unconsciously.
"Come on, Esther baby, take it down!" said Susan.
Finally, Esther unfastened the bikini top and it fell into the pool. Her beautiful tits were free in the sun, the tan lines emphasizing their shape and firmness. Everybody stopped singing. Both men gasped and started stroking their cocks vigorously inside their pants, while Susan was gripping on their legs.
"So who's the loser now?" asked Esther smiling, while caressing her tits and playing with the nipples.
"I...I am," blushed Susan.
"OK, I thought so," laughed Esther.
"But I am not flashing out my tits for nothing! At least everybody is enjoying their selves."
Esther was now looking at her husband and Mark, who were still teasing their hidden pricks.
"Boys, slow down, or you'll cum in your shorts!"
Only then noticed Susan the erections barely hidden in the shorts, at both her left and right her sides.
"Susan, it's my time now to enjoy spoils of victory!" said Esther, as she approached the small group.
"Remember it was all a joke," told her Susan sheepishly.
"What do you mean? Are my boobs a joke? Because I see them bare, just as you dared me to!"
"I didn't mean that. I was saying that... oh, never mind. What do you want me to do?"
"So, boys, what should I ask her to do first?" the winner asked Mark and Tom.
"Should she go topless too?"
"Yes! Topless!" shouted both men.
It was obvious now that the mojitos, combined with the small striptease, had a very strong effect on them, leaving the boys without any inhibitions what so ever. And if in Tom's case was an ancient desire of seeing his best friend's wife naked, Mark was hoping that this will lead to more...
Susan's face was all red, as if burnt by the sun, but Esther was gently pulling her by the hand away from the men and was trying to encourage her.
"It's your time now. You'll see its simple... and you'll feel a lot better topless. The sensation is unique!"