An unwelcome interruption...

Janet begins to squat down over your cock, but she can impale herself on you, you both hear someone pushing past the bushes you were hiding behind.

"Blair, Janet... The bus is waiting for you guys..." your older sister, Alice stops in midsentence as she comes around the edge of the bushes to find you in a compromising situation. Her eyes quickly jump from Janet's completely nude body to your erect cock and she puts her hand over her mouth. "Oh... my... god..."