During the summer vacation, my sister brought a friend home, but the air conditioner in her room was broken, making it like a steam bath! The fan's breeze wasn't cooling at all, and she was drenched in sweat. Desperate to cool down, she lifted her skirt in front of the fan, resulting in repeated panty shots and nipple flashes! Even that didn't help her cool down, so eventually, she took off her clothes and bra, ending up in just a camisole, completely disheveled! Seeing such an unguarded and overly erotic sight, I found myself getting aroused by my younger, underdeveloped sister…
