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 :("