Me and my sister, Becky, had just gotten home from a party at friend's house. Becky is only a couple of years older than me so we move in the same social groups and often go to the same parties. We have a good relationship, just as much friends as we are siblings. We came in, quite drunk, laughing and joking with each other. "I've got some weed in my room, do you wanna have a smoke before we go to bed?" I asked Becky.
"I like the way you think, bro." Becky said with a smile. "I'm just going to change into something more comfortable, I'll meet you in your room."
I go to my room and also get more comfortable by stripping to my boxer shorts. I roll a joint waiting for Becky. Becky comes into my room wearing a grey vest and purple cotton panties. She clearly isn't wearing a bra as her vest is tight enough to show the shape of her small boobs. I try not to look, she's my sister, but I'm only a man. Becky sat on my bed, took the scrunchy off her wrist, and put her dark brown hair into a messy bun.
"Aren't you a bit old for unicorns?" I ask, referring to the cartoon unicorn on Becky's panties, while taking a draw on the joint.
"Says the guy wearing Spider-man boxers?" She smiled wryly.
"Fair point." I take another draw and pass the joint to Becky.
We lay on my bed chatting, passing spliffs between us. "Liam said his band actually has a gig in a couple of weeks." Becky was talking about our friend. "We totally have to go to show our support."
"Yeah, it'll be fun. I've heard the guys practice, they're good." While talking, my eyes have been roaming over Becky's body. I had a bad habit of checking my sister out but I didn't feel as bad about it as I should. On the occasions Becky noticed, she never seemed bothered. This time I had noticed the waistband of her panties had shifted and the top of her bush was poking out, it had caught my attention. "Who knows, maybe one day we can say we're friends with rock stars."
"If they do get famous they'd bett... Oh my god, Rob!" Becky burst out laughing as she notices my erection straining my boxers. "Enjoying yourself there, dude?"
"Sorry, the fella likes what he sees." Becky gives me a smirk and a raised eyebrow. "Your bush is poking out, Beks." Becky glances down at her panties.
"So? It's just hair?
"It's pubic hair."
"It's your 'sister's' pubic hair." Becky giggles again. "You like your girls hairy, do you?" Becky pulled down the front of her panties, just a little, exposing more of her thick, dark brown, bush and the paler skin around it. My eyes widen in surprise and I grin. "How's this?" Becky pulls her panties back in place.
"Wow, Beks. I like it."
There's a brief moment of silence, Becky looks at the tent in my boxers. "Show me."