Sister Catches Him With Her Underwear and Trades Secrets

She walked in on him sniffing her dirty panties and froze with her mouth open ready to yell. He quickly reminded her about the time he caught her touching herself to his stuff so they both had dirt now. Instead of fighting they locked the door and started touching each other to keep things quiet between them. What began as nervous giggles turned into heavy breathing and desperate grinding as they explored this new inappropriate thrill together.