1 definition by juddthereasa

Top Definition
to attempt to give a high five, but miss and only hit each other's thumbs. It can be later modified to be two people purposely holding out a 'thumbs up' and hitting the sides of each others thumbs with a nerdy smile on their faces.
"Hey dude, High thumb!" *awkward, cheesy grin*
by juddthereasa June 16, 2009

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