The Dormitory Surprise

Forgetting that it was visitor's day, one resident of a men's dorm went down the hall to the shower leaving his two room-mates chatting in the room. Coming back, wearing only a towel, the freshly showered man heard voices coming from the room and assumed it was his rom-mates still chatting. He decided to make a dramatic entrance. He whipped off his towel, held his penis and kicked the door open and yelled, "Bang! Bang! You're all dead!"

The voices he'd heard however were the families of his room-mates.