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!"

Mum thumb by nicko2 January 2, 2009

mum bummer 

The act of being overly nice and polite to the parents of friends/acquaintances, especially mothers, when you are in fact brash and filthy around your peers.

See also: dad spooner, granny grinder

We needed to leave but Kevin was busy being a mum bummer and we got there ten minutes late.

I'm wasn't mum bumming, she was just asking me all these questions.

mum bummer by barkbat October 22, 2009

mum drag 

When your girlfriend had small children and she holds your hand crossing the road, dragging you with her, like she does with them

Was walking hand in hand with my girlfriend and she 'mum dragged' me across the road at the crossing - I'm 46!!

mum drag by RugbyChris February 6, 2017

mum bum 

a girl wit no ass, a saggy ass, or jus an ass that looks something like a 50 year old womans.

Steph shouldnt wear tight jeans because she has a mum bum and its discusting

mum bum by Sh@w_t@y June 28, 2006

mum joke

Generally a cheap joke made at the expense of someone elses mother, especially with sexual connotations.

#1: What's going down?
#2: Johnson's mum
#3: Again? .. laughs

#1: Well my mum was mowing the lawn
#2: Last time I checked she didn't have anything to mow ;)

mum joke by P.D. March 8, 2004

mum act 

The act of not responding when asked an important question, typically via email or voicemail. Often used in the hope that the problem will just go away.

Damn! My boss's is really giving me the mum act about my raise request.

mum act by Mikee P March 27, 2008

mum tum 

The loose, saggy skin and accompanying fat around a woman's midsection that remains after having a baby, which often persists even after returning to one's pre-pregnancy weight.

British English.

These stretchy high-waisted jeans are great for covering up mum tum!

mum tum by araneaeee December 1, 2016