A term to describe someone's embarrassingly small penis and claim that it is massive. - First described by @_james_3005. 2017
Chelsea "He has a massive penis, Chantelle told me yesterday after she slept with him"
Bradley "What? That lying bitch, she told me he had a crotch thumb!!"
Bradley "What? That lying bitch, she told me he had a crotch thumb!!"
by THESPITFIRES October 19, 2017

by DougGimmiedome May 20, 2021

by Moe.Ron24 May 13, 2016

Pain associates in the right thumb of a gamer, This is caused by moving the thumb off one button to the next with out rolling the thumb. This is associated with most systems that have buttons in a diagonal form but the Gameboy's format is at a 40 degree angle and not a 45 degree angle. Being that the D-Pad buttons on most controllers have not changed since the NES and they are close enough so you can roll the thumb causing less stress then having to take the button on and off a button in order to do actions.
Gary: Man I found my old Gameboy in my closet!
Lance: That is great did you find any games?
Gary: Yes my old copy of pokemon gold, and link's awaking DX.
Lance: Cool how long did you play?
Gary: not long after about three gyms I got Gameboy thumb
Lance: That is great did you find any games?
Gary: Yes my old copy of pokemon gold, and link's awaking DX.
Lance: Cool how long did you play?
Gary: not long after about three gyms I got Gameboy thumb
by The true Gameboy God March 4, 2012

Talking gangsta through text messages or social media. Making yourself harder than what you really are. Someone who keeps it real through social media but a mouse in public....
Dude thought he was hard on facebook yesterday thumb thugging but I seen him in person and he had nothing to say...
by Harris348 February 9, 2017

When your boom stick booms the wrong way, and you have to stick your thumb inside the whole in your neck.
by Lemomlimepie6 May 21, 2021

Guy1: Hey dude go on urban dictionary, go to my word and thumbs-it-up.
Guy2: I'm thumbsing it up now.
Guy2: I'm thumbsing it up now.
by Tiny Doug April 6, 2010
