one-arm 

While engaged in the act of sexual intercourse, the guy who starts on the bottom with the girl riding him places his arm around his partner’s back and deftly scoops her turning her around and underneath him without slipping out. At this point the guy is now on top and assumes the missionary position. For this to happen smoothly the girl should be fit and not overweight as it is much harder to one-arm a 300 pounder.

My buddy Chris met the hottest chick last night! She was so fit that he was able to one-arm her with ease.

one-arm by mducrane April 16, 2011

One arm as long as the other

Basically turning up somewhere with nothing to give when something is expected. i.e coming to a party empty handed. Irish in origin

Jim: "Dave arrived in late to the wedding yesterday, the clown"

John: "Typical. Did he bring a pressie"

Jim: "Not at all, arrived in with one arm as long as the other"

One arm as long as the other by farkell August 21, 2011

One Arm Yogurt Thrower 

Male genitalia. A penis. ( penis )
Throwing yogurt is a reference to ejaculation.

"I bought some viagra for the one arm yogurt thrower"

One Arm Yogurt Thrower by 12AA34FF May 13, 2006

one-arm joint 

A coffee or donut shop, especially one with a counter.

They're called one-arm joints because you only need one-arm to eat.

one-arm joint by P Brain January 3, 2008

one-arm willy

The man/female covers their arm with lube the receiving partner gets in doggy style position and spreads their asscheeks the lubded one punches their anus and in one motion shoved their entire arm into the receivers anus

My ass hurts tom gave me a one-arm willy last night

one-arm willy by dookie69999 April 11, 2014

one-arm-driver 

a driver who drives only with one arm while the other arm is either holding or groping a girl.

The police are looking for the one-arm-driver just like you.

one-arm-driver by wordwatcher April 23, 2012

one arm willie 

Checking both earrings with one hand

Jennifer pulled a one arm willie at the bar cause she was holding her beer!

one arm willie by Frannie&edgar March 16, 2014