A Reverse Erection
Your penis gets so disgusted by something it looks like it’s running away from a giant poopy monster. It’s like the ultimate 'no way' moment for your manhood.
I saw my ex’s new boyfriend and my cock ran out of the room screaming.
My mom’s new boyfriend is a smelly, fat man with a beard. My penis immediately quit.
I tasted my brother’s lunch and my cock went into hiding.