A comment left by your mother (who you reluctantly added as a friend) on your Facebook. They are typically lame and/or embarrassing and can often be a source of great entertainment for your friends. Momments are frequently deleted.
"Dude, this is killing me! I got another momment yesterday. I swear she checks my facebook daily."
"She has to stop mommenting or I'm gonna remove her as a friend."

Chad Bronson "SOO WASTEDDD WAT A NIGHTT"
Marcia Bronson "Honey, we should talk about this :("
by AriFerrari October 30, 2009
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Mom to adult son: "You could really gain weight living in this city"
Cool passerby: "Ugh, what a momment!"
by Bond Giancarlo April 8, 2018
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The amount of time it ACTUALLY takes you to do what you told your kids you would do "in a moment."
"Mom, can you come wipe my butt!?"
"In a second."
"Oh no, not a momment!"
by Sassafrazzle April 9, 2021
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When one's mother comments on their status with things like, "That's lovely, but make sure you're home by 10," or "Your friends should watch their mouths on the internet."
I bet Josh was so embarrassed by all his mother's mommenting.
by jlay9 February 28, 2010
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A momment is a comment made by a mother (mom).
Dad: "I'm not spending any more money on the Cubs this year.. they're just terrible."

Mom: "You mean after we go to the gift shop, right?"

Me to my brother: "that was such a classic momment."
by cmkropp May 30, 2011
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When you bot out so hard in valorant with Jett that you make your teamates want to blow their brains out.
what did you do yesterday?
I had a ubeen momment.
by RICHMONEYYY November 10, 2020
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Also called a 'Scrubs-moment', and is already defined. :)
I just had a 'scrubs momment': it was My Deja Vu, My Deja Vu :)
by Ashley Sykes February 17, 2008
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