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rhombus your mombus 

A phrase commonly pulled out by the dumbest person in a 5th/6th grade math class. When the teacher asks how to find the area of a rhombus, this kid normally turns to the quietest, least-expecting kid in class, causing outrageous reaction
Mr Sanders: The height is six inches, and the length is 14 inches; find the area of this rhombus.

Joe: I'll rhombus your mombus

Derek: You already had my dad
rhombus your mombus by Alan Aldridge December 14, 2007
Related Words
Mombutt happens almost immediately after the birth of a ladies first child. The hips widen from birth, stretching the cheeks to appear much flatter. There will be a slight upside-down heart shape starting a the center crack. That outlining will sink back down into the thigh with the finish of every step. Mombutt may deviate, but will always start with the presence of Mompants.
mombutt

Mombury's 

The name given to your parent's house when going there for the purpose of taking food from their fridge and cupboards when you are in need of shopping but low on money.

Like Sainsburys but free - also known as Momco's
You have no food in the house and no money to go food shopping so you go to your parents house to stock up on essensials such as bread, butter and tins of food etc.

Mombury's - Like Sainsburys but free.
Mombury's by Jokor July 7, 2009
A mom's overgrown pubic hair region/bush that she can't trim due to excessive tiredness or lack of time.
Susie had to wear a skirted swimsuit to hide her mombu from the other swimmers.
mombu by Suburbansprawl July 27, 2012
The typical online Xbox experience where a 10 year old is fucking your mom
Xbox online just ends up being a MomBox after a few rounds of Halo
MomBox by Cold-Solid December 7, 2016
A car for which moms can use to get necessary supplies for the week. Having good space and being box shaped.
Can you see that mombox, it looks large.
That lady can't use a smartcar, she needs a mombox
mombox by cnetfan April 1, 2010