We would often stay in very skinny outfits in the absence of our parents on such days. That day, Tammie just removed all her clothes. Send her nude wa... nothing new, but, seeing her move nude all around our flat was different. Although the curtains were drawn, I was still a bit afraid. Tammie however was unmindful. She just moved like that. Mom and prepared dinner and kept in casseroles. She had her dinner in her birthday suit.All the while, she was moving her hands over her skin, sometimes over. I faintly heard Nick calling in the background, but neither of us bothered to look back.As we got into the bathroom she shoved me into a stall. Groping my breasts as she slid her tongue back into my mouth, her tiny hands felt nice as she squeezed harder and harder. I slipped my hands to the back of her dress and unzipped it; I pulled it off of her revealing her lace black bra, but no panties. Easy access.She didn't stop me, so I pushed forward to unhook her bra leaving her perky breasts. That was just the thing and I sat back on the grass where we were shagging. The sun still blazing down and with there being no wind it was really amazing, just to sit there, chilling, while being naked without a care in the world. Jojo, came out of the water and as she did, I watched her, staring at her tits as they bounced. Her pussy lips still sticking out between her pubes and the droplets of water clinging to her skin of her thighs slowly dropping off her as she walked. She laid next to me. We headed to the pond, and in our excitement, started removing shirts probably around fifty yards early. At the small sand "beach" near the dam, we finished stripping and dove in.After while we got cool enough, and laid out on our clothes just basking in the afternoon sun looking at the girls. Mark popped the first woody. Mary glancing over started giggling and said "Hey Ginny, look at my brother".We all looked and laughed at Mark, asking him what brought that on. Mark said it was because.