paddle wheeling
A guy goes off to jerk off and his best friend sneaks behind him and moves his arm like he’s trying to help but he’s just making it worse.
He went to jerk off and his friend moved his arm and he got a paper cut.
My friend went to jerk off and his buddy moved his arm and he got caught.
He went to jerk off and his best friend moved his arm and he got a smelly sock stuck in his hair.