dumbummer 

Beats the heck outa' me...

Guy A: Whats goin' on?
Guy B: Dumbummer...
Guy A: ...what?

dumbummer by Unkpwn May 4, 2006

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

mumbumbler

someone who mumbles and talks a lot over the phone

Hanna, your such a mumbumbler.

mumbumbler by sundancer96 March 27, 2011

mumbumbler

someone who mumbles over the phone

Grant is a mumbumbler because no one can understand him when talking on the phone with him.

mumbumbler by gmillzer April 3, 2011

mumumermumuh

when someones excited and the words come out like this

lil luke said 'i like cheese' but it came out like mumumermumuh

mumumermumuh by lukeboi July 6, 2006

GumBummer 

Someone who always asks you for a piece of gum after seeing you pop a fresh piece.

I had a new pack today but because all these GumBummers I'm already OUT!!!

GumBummer by JKELLO January 10, 2012

mamjummer 

An average tallywhacker

Whore uno: How was that stud muffin you went home with last night?
Whore B: It was ok considering I had to finish myself off after his mamjummer did what it needed to!

mamjummer by Blasphemous July 6, 2021