To do something to something that normally a mom would do; or to emulate a motherly activity
Wrapping up leftover pizza from a frat party in nice individual plastic wrapped packages, Tom heard his roommate holler: "Hey man, you really mom'ed that up!"
Or
As Christy served up homemade cookies and milk to her friends, they cheered: "Mom it up!"
To mess something up - especially anything of a technological nature - in that particular Mom-style. A polite way to say that your Mom fucked something up.
"You mother totally Mom-ed Up the computer - she got frustrated and just started press every button and key possible. "
"The sprinkler system was completely Mom-ed Up - she turned every knob in every way, and now the whole system doesn't work."
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A mother figure to a child that is not married to the father.
A mother figure that stepped-up to the plate.
This is my dad and step-up mom, they take care of me.
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The act of having your pants constantly fall down low enough to have Plummer’s butt especially at the worst possible time
Pull up your pants you are totally mom-ing it up over there.
To do the things that only a mom can do.
I need to mom up & clean this pile of dog poop on the carpet that my son got a wiff of while torturing his sister by attempting to put her face in it then proceeded to vomit on top of said poop.