I'm gonna cum to your house and knock knock on the back door
A loud and dirty way of saying you're coming to their house to give them butt-sex like it's a surprise.
I'm gonna cum to your house and knock knock on the back door like it's a welcome party.
You better be ready because I'm cumming to your house and knocking on the back door like it's a free show.
I'm gonna cum to your house and knock knock on the back door like it's the best part of the day.