"Oh God!" Brian wailed, frantically pulling at the blankets, trying to cover himself up. "Mom! What are you . . . why are . . . ohhh, noooo . . ." He buried his face, which had turned beet red, in the blankets.
Laughing, Pam gave his ass a playful slap and jumped off the bed, walking over to us in the doorway. We had stopped, frozen, when Pam had given us away and hadn't moved yet. She stopped in front of Cynthia, who had a look of anger mixed with lust on her face, one hand still squeezing my cock, the other still under her skirt.
"I'm sorry, Cyn," Pam said, reaching up to stroke her friend's cheek and giving her a soft kiss on the lips. She giggled. "Guess I shoulda locked the door, huh?"
Pam leaned over and took Cynthia's head in her hands, bringing her face close for a deep kiss. Cynthia moaned, her tongue snaking from Pam's mouth to lick at a drop of Brian's cum on her friend's chin. Pam broke the kiss and took Cynthia's hand then smiled up at me.
"Well, come on in, you two," she said. "Join the party."
We walked to the bed. Brian was sitting up, covering his crotch with the sheet, a shocked look on his face as he watched Pam undress first his mother and then me. "Mom . . ."
"Hush, sweetheart," Pam said, settling Cynthia on her back on the bed and lowering her face toward her dark, glistening bush. "I told you your mother and I have been very good friends for a long time. We share everything."
Cynthia moaned and arched her back as Pam's mouth clamped down on her pussy. I climbed up onto the bed, giving Brian a shrug as I knelt next to Cynthia's head. She reached up and guided my cock to her mouth, swallowing me almost to the root in one warm, wet movement.
By now, Brian had recovered from his shock and as the room filled with moans, he was stroking his hard cock, his eyes moving from his mother's lips and tongue working on my cock to where her pussy was being mauled by Pam.
Cynthia wrapped her hands around my ass and pulled me closer to her. I lost my balance and fell forward on the bed across Brian's out-stretched legs.
"Sorry, man," I said, starting to get up. His cock was just inches from my face, his hand still moving up and down. He was a bit longer than me, about eight inches, but not as thick.