Me and my friend were at the beach and I was ready to get a tan. I did my fron and later I did my back. When I was doing my back, I didn't want any tan lines so I layed on my stomach, untied my stringy bikini so it was off but I was laying on my stomach so no one can see my boobs. I also untied the sides of my bikini bottoms and took it off completely. No one could see my vagina, cause once again I was on my stomach. I relaxed and soon, feel asleep. About an hour later I woke up and got up, forgetting my bikini bottom and top are still laying on my towell. For some reason I don't even notice and start walking towards the showers to rinse the sand off me. I get there and these guys all start staring and me and I realize that i'm naked. I run to the water and stand in it calling for my friend. She came and gave me my bikini and we went home.