OK, go to Jacob's room
From Create Your Own Story
Why the hell not? You make your way down the hall and to the door to Jacob's room. You walk in without knocking, and accidentally walk in on him masturbating to porno magazines. He jumps and futilely tries to cover his exposed and hard cock with his magazine, and after a bit of fumbling quickly slips on his shorts.
"Sorry for walking in on you." You say
"Haven't you ever heard of knocking!?"