You were at your best friend's house for a sleepover. But his girlfriend calls with an urgent need and he had to go to her. You were supposed to finish your shower and go home. After a while, when your friend left his house, you see his sister leaning against the door frame, studying your naked body
"My, my, i never expected what those buggy clothes of yours held under them. I'm quiet impresed"
she licks her lips