Happens when a person running (note: not a runner) runs with their arms tucked into their armpits and forgets to swing them in stride. Their arms look tiny and they look like a big goofy T-Rex.
Wow, that poor guy clomped by with t-rex syndrome. I could hear him from the other side of the street.
by metalpizza July 11, 2006
When some who holds the steering wheel of their car so close to their bodies that their arm position resembles that of a Tyrannosaurus' puny arms.
by King Dar January 08, 2010
by ThereAren'tAnyNamesLeft January 15, 2018
When a really big guy has a large cock, but it looks small due to his over-all size, much like T-Rex's arms.
by Alex Stockwell April 23, 2008
If an awkward girl won't leave you alone, make like Ian Malcolm and stop whatever conversation you were having to freeze like a statue. Her vision is based on movement and she will pass you by for tastier prey, like a T-Rex.
"Kelly from the bar came up to me last night and I couldn't shake her off, I had to utilize the T-Rex Defense in hopes she would move on and attack some lawyer guy on a toilet."
by Phil Hubbard August 19, 2006
Whilst giving a hand Job the girl puts her elbows into the sleeves of her t-shirt/Top, giving the impression of T-Rex arms
by Ghandi179 April 12, 2013
When you're fucking that bare muff and you become so pleasured that you lose the capability of your arms and you become a paraplegic. This makes your arms resemble a T-rex's arms.
by Jarmanjarman July 17, 2018