To thumb yourself - to thumb or stick your thumb or finger into ones anus.
Man - "Tom what are you doing?"
Tom - "I'm thumbing myself, it feels very nice."
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The bump that forms in the zipper of mens' pants that is often mistaken for an erection
Girl: Look at that boner
Guy: It's a thumb goddammit...THUMB I TELL YOU!
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To hitchhike, if you don't have a ride
If you don't like the way I drive, you can thumb it.
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(verb) Using a finger to push a small object into your buttocks.
ED: "Hey Randy how can we make this ecstasy really kick in?"
RANDY: "I say we thumb it!"
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To "like" something on facebook. Telling someone that you like something doesn't necessairly mean that you liked it on the book, but saying "I thumbed that" doesn't need clarification.
Dude, I thumbed that last night
He obviously posted that thinking that everyone would thumb it. They didn't. What a bad athumbtion.
She thumbed everything on my wall. It was a freakin thumbderstorm!
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The act of getting kicked out of a gentleman's club by inserting thumb in exotic dancer's anus.
Jimmy got us kicked out because he was thumbing Passion!
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