Definitions by Amynonomous

The Gentleman's Knock 

Slapping or smacking a girl's crotch with your boner and then proceeding to not sleep with her.

"That slutty girl thought she was going to get it good, but he ended up giving her the Gentleman's Knock."

or

"He was too much of a gentleman to get in there, so he just knocked."

The Gentleman's Knock by Amynonomous May 13, 2014