Punishing your significant other by inserting your thumb in her ass without warning. A technique that is crude, but effective. See also, ad hoc.
Thumbing--She wouldn't get ready to leave, so I thumbed her so she would get out the door.
by Bleeding Blue January 16, 2009
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A freakish bird-human hybrid creature baring thumbless, arm-like appendages jutting out in a crooked tangle from her hideous body.
My boy just took a nasty shit on No-Thumbs' lawn!
by HorshamNugga October 24, 2008
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Using your thumb to help pleasure a woman cause you can't get it up.
Mart had to much to drink and couldn’t get aroused. So he didn’t disappoint the lady he used his thumb to help get it up there (thumbing it in).

"Like trying to push a Marshmallow into a piggy bank."

"You’ve got it!"
by scratch_nasty October 12, 2011
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More than a thumbs-down.

When a thumbs-down is not enough.
Person 1: *breaks something expensive*
Person 2: you get a thumbs-no
by JRhinae August 17, 2016
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Getting a blow job whilst having a thumb up you’re bum
His girlfriend got on hers knees and performed oral sex on him whilst putting her thumb up his bum, she called it thumbing
by Stush69 December 9, 2019
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To stick ones thumb inside one another, one can thumb someone else of thumb themselves
Tim: good sid what are thou doing to me
Bill: why I'm thumbing you kind sir, it's a hip new way of communication
by Cumslut2.0 February 15, 2021
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when you give the middle finger without holding up your thumb; seen as a rude gesture instead of lighthearted or playful
“Yo, she’s sticking up her middle finger at me”
“With no thumb”

“She’s real mad bro”
by PardiB December 9, 2020
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