I came back from a run and notice you, my brother, staring at my ass. I'm waiting for Mom to get out of the shower. I tease you with my ass and then suggest that you can rub your dick against my yoga pants. You go behind me to rub your dick against and between my ass cheeks over my yoga pants. I take out my boobs for a bit to play with them. Right when you are about to cum (implied), Mom catches us! Oops!

*no penetration