Hammer arm

When a male masturbates with one arm more than the other causing it to be muscularly bigger than the other one.

Guy 1: "Yo whys your one arm so big son?"
Guy 2: "Ahh i got Hammer arm, i jackoff with my dominate arm more then the other one so it's just uneven."

Guy 2: "Sounds like you needa switch it up a bit man."

by killerseemroe January 7, 2012

Theatrical arm

An arm movement commonly used by actors and singers.

Extend your arm forward with a bend of about 90 degrees at the elbow, so that the hand is level with and to the side of the face.

Now, bend the fingers into a claw-like formation, as if grasping something invisible.
Hold the arm in this position, thrusting the forearm forward to emphasise various words as often as necessary.

He was a serious actor. You could tell by the theatrical arm movements.

by buttons0191 September 27, 2011

Covid Arm

When over masterbating Due to the coronavirus causes a guy to have one buff, muscled up arm

Man look at his COVID ARM, he must’ve been jacking for days!

by AlienDavid-19 April 7, 2020

Arm boner

What you get when you someone slightly touches your arm. Your arm then proceeds to tense up and flings straight up in the air.

Alaura slightly touched my arm, and I got an arm boner! I broke his nose!

by Mmmmmpoopymichelle May 21, 2011

Arm toggle

Switching from one arm to the other when doing an activity because it's getting tired or starts hurting.

I had to arm toggle while masturbating because my arm was getting tired.

RSI makes me arm toggle quite frequently. Thank god I can use the mouse with either.

by relix February 28, 2010

teen arm

Super sized penis, even freakishly larger than a baby arm. Size of not a baby's, not a child's, but a teenager's arm.

He was more a teen arm than a baby arm. There's no way I could have any of that.

by GraceUnderPressure August 26, 2017

Prom Arm

When a young female puts their hand on their hip with their elbow bent at a 90-degree angle. Inspired by prom pictures and attempts to make arms look tiny.

Katherine had such bad Prom Arm in all of the pictures from last night. I think she was trying to impress Sean by tricking him into thinking she has tiny arms.

by supersnowman93 December 12, 2012