You start taking a bath

After coming home you head straight to the bathroom to take a bath. You take a quick shower before starting to fill the tub for your bath. You soak in there for a bit and then suddenly you hear the bathroom door open.

"Lily, I really gotta go, can I use the toilet real quick?" Jake asks you.

Thinking that the shower curtain covers you and to be nice, you let him in. You hear his pants drop and then... a fapping noise?! You are wondering what he is doing...