A word used by gamers to indicate a button layout on an Xbox 360/Xbox controller. In this layout, the primary button (the shoot, punch, or accelerate button) is moved to the "A" key on the controller. Most gamers play this green "A" button with their thumb which started the phrase "green thumb"

It is a approved layout on the halo franchise.

Not to be mistaken for the definition for Green Thumb which means a person with a knack for gardenining.
"after playing all weekend, the right trigger on my controller broke. but i used my 1337 h4x skills to customize the button layout. I changed the shoot button to "A" and now I've been using the green thumb since.
by the IPH council February 25, 2009
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a big joint the size of a thumb
yo man last night i rolled a joint it was a fucking green thumb it had me fucked for hours.wee
by david mullins May 26, 2007
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1. A term coined by herbologists to describe someone who posseses superior plant-handling skills. 2. Used to describe soeone that didn't fully have sex with a female, but merely masterbated, and yet still got her pregnant.
1. "Wow. Look at my garden! It's teeming with life!" "Yep. You must have a Green Thumb or something."
2. "So wait. She told you she was pregnant? I thought you said you DID'NT have sex with her?" "Yes Chris. I got her pregnant. Cuz...yaknow...I got that green thumb!"
by Curly Mo June 11, 2008
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A term used for a person who has recently bought marijuana or has some on their person.
Yo, I heard mike has a green thumb right now. Go hit him up for a deal

I have a green thumb after my plug hooked me up
by SharksVengeance May 17, 2016
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One who has just eaten a bean sandwich and has to take a massive diarrhea dump but just can't quite make it so one makes a spontaneous decision to stick your thumb up your ass. Works better if shit is green.
Hey jeff! I could not quite hold it so i decided to green thumb it.
by Eugenio B. December 29, 2007
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using one's thumb as a "butt plug"
I gave that chick a green thumb. She loved it.
by Jevus November 10, 2005
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a big joint the size of a thumb.
dude i just rolled a joint its a fucking green thumb
by dahimself May 19, 2007
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