Mum thumb

When someones mum wont let them do something, even though they are old enough to decide for themselves.

Overbearing, controlling mother.

Similar to being under your girlfriend/wifes thumb.(not cool)
"No way dude, Dave wants to get a tattoo and although he's 19, his mom wont let him"
"He's so under the Mum thumb!"
by nicko2 September 07, 2007
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The Kentucky Thumb

When you shove your thumb so far up you significant others vaginal cavity they will no longer have a menstrual cycle for a minimum of 6 months
Friend:Hey I heard you gave the Mrs. The Kentucky Thumb

Response:Yeah we'll be good for half a year
by The Kentucky Thumb May 20, 2021
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thumbs down

A rating that asses give other peoples definitions for no fucking reason!
Definer: A lamp is an object that can light the dark.

Reader:*Gives thumbs down just cause hes a fucking ass*
by Big LJ September 02, 2006
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Toe Thumb

When you're thumb is shaped like a Toe.
by MCMcCheezy August 13, 2009
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thumb generation

noun: The generation born after 1985, which as teens and adolescents communicated by the use of mobile devices such as cell phones. Because wireless mobile devices are small, the thumbs are generally used to type. This led to the use of acronyms to decrease typing time.

adjective: Of or relating to the Thumb Generation.
She uses phrases like TTFN because she's part of the Thumb Generation.

ROTFLMAO is so Thumb Generation.
by revolutionary mama December 30, 2007
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Thumb rating

Urban Dictionary's new system of rating definitions that sucks harder than a young Thaiwanese boy.
The infamous "fo' shizzle my nizzle" (first definition) used to have thousands of five star ratings, but now has 20 thumbs up.
by Peter G June 01, 2004
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Thumbs Down

This is most likely what this definition will get.
I just reached 100 thumbs down. Hooray! My definition sucks dick!
by tyler225905 June 22, 2016
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