alabama door knocker 

When you fucking a woman so hard that your balls keep slapping against her asshole

I fucked Brooke so hard last night my balls were Alabama Door Knockers

alabama door knocker by The Butcherr July 2, 2016

Door Knocker 

While performing vaginal sex in the missionary position, a door knocker is the act of the man's ball sack gently tapping against the woman's butthole during each thrust. A play on the phrase, "he's knocking on the back door." In which a man suggests or non-verbally asks a woman if he can perform anal sex by tapping her butthole with his penis.

I was with Ron last night. He could not leave that door knocker alone!

Door Knocker by rhastings88 April 3, 2009

Argentinian door knocker 

While receiving a blow job in a standing position, the guy lifts his Wang stick out of the way and proceeds to knock his fleshy sack against his partner's forhead. Also known as the upright version of the infamous Tea bag or the reverse version of the Cowgirl Tiara

"Wow Vanessa! I love your new hair cut, those bangs sure do make me want to give you an Argentinian door knocker"

Argentinian door knocker by paddleB September 1, 2014

Doorknocking 

When a free balling man, humps the back of another person allowing his balls to swing and strike like a doorknocker.

My back hurts from Pat doorknocking me last nite after his run around the track.

Doorknocking by thebumni September 21, 2009

dongknocker 

a male or female who engages in oral sex with more than on man a t a time

that girl is a total dongknocker

dongknocker by ultra super awesome man October 13, 2010

prussian door knocker 

when a man walks up from behind another man, sleeping or awake, pulls out his junk and slams it down into the face of the other man.

i gave jacoba prussian door knocker that almost broke his nose!

prussian door knocker by ronniew October 18, 2006

doorknobber 

a Newfie (newfoundlander) that is using meth

That newfie is a doorknobber

doorknobber by feign April 7, 2004