What is I'm Gonna Cum To Your House And Knock Knock On The Back Door?
1.
A dirty way of saying surprise butt-sex.
1.Waffles: Hey Dwarfo, I'm gonna cum to your house and knock knock on the back door. If you don't answer, I'm gonna bang bang!
Dwarfo: Yeep! I hope it isn't too surprise!
2. What rapists say to little kids when they are gonna butt-rape them.
See