After slipping on our flip-flops, Bethany and I ran for the house with our beach bags in hand. We grabbed our overnight bag from the closet under the stairs and locked ourselves in the bathroom.

We showered together quickly and resisted the urge to fool around. I put on my red pair of boyshort panties and matching sports bra, then a pair of tight jean shorts and a red half-shirt that showed my belly button off.

Bethany put on a thong that her mother didn’t know about, but didn’t bother with a bra given her tiny mounds. Her ass in that thong almost derailed me entirely. She giggled and pushed...