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A day devoted once a week to hot mothers.
George: "Hey Ralph, are you working tomorrow?"

Ralph: "Heck no! It's Momday, and I'm hooking up with Debra"
by terminal2 February 04, 2008
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A Momday is an atrocious, awful, dreadful, lousy, rough, sad, garbage, disheveled, messy, made me wonder why I had kids, kind of a day.
I've had to microwave the same cup of coffee 9 times because one kid is covered in poop and the other is having a meltdown because her toy won't stand up by itself. Just another Momday.
by GearedUpForMomdays May 19, 2019
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