a local term use by people in the cities of seal beach, long beach, garden grove and los al to describe a person with giant muscular arms just like Augustin Castillo who has a reputation for having beastly arms
by some runner guy August 8, 2010

"Why is that retard doing that weird shit with his arms?"
"It's cuz he's retarded as fuck so he's a flappy arm."
"Hey! fucking flappy arm what the fuck are you doing?!"
"I told you to stop cawing fwappy aum bwo!"
"It's cuz he's retarded as fuck so he's a flappy arm."
"Hey! fucking flappy arm what the fuck are you doing?!"
"I told you to stop cawing fwappy aum bwo!"
by flappyarm.sponsor April 25, 2023

Well-defined biceps that nicely fill out the sleeve of a t-shirt or short sleeve shirt. These arms can be seen anytime of the year but are prominent in summer and warmer climates.
Note: This type of arm is often displayed while wearing a tank top or completely shirtless.
Note: This type of arm is often displayed while wearing a tank top or completely shirtless.
by Numbercruncher July 22, 2012

Girl and boy spooning in bed (or boy/boy, girl/girl, ?/? Obv)
Girl “your arm is in my back, can you move it”
Boy “that’s just my gruey arm, don’t worry about it”
Girl “your arm is in my back, can you move it”
Boy “that’s just my gruey arm, don’t worry about it”
by Nyaheh February 4, 2018

Deon: Man, Terrell just flipped Brock with one hand. You would thing Brock was stronger but no.
Dixon: Yep, Terrell got him with that Freak Arm.
Dixon: Yep, Terrell got him with that Freak Arm.
by DMorrissette May 4, 2010

by Mr-Donz January 11, 2009

by jzachary October 18, 2010
