What is Mum Thumb?
1.
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!"
See
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A disease one may contract while living in the dorms at SDSU.
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While having sex pull out and fart in the girls pussy then continue having sex. She will then queef out the cum.
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