verb. To use Facebook like a mom ie. looking at someone's profile and like everything they've posted in the past three months all at once. Characterized by the resulting notification spam.
My mom liked all of my profile photos, she was mombooking again.
by thedeerone July 17, 2015
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(v.) When, on facebook, someones facebook page gets creeped on by their mom, especially when a mom uses her facebook friend-status to look at the pictures, posts and statuses of her child/children to gain information that the child did not want his/her mother to know.

mombooking, mombooked.
Girl 1(status update): party tonight! its gonna be awesome!

Girl 2(comment): yeah were gonna get more wasted than last time!! maybe we can find some more guys that will take us back to their place!

Mother of Girl 1(comment): you aren't going anywhere tonight, call me right now!

girl 2(comment): oooh, mombooking FTL :-(
by 59842 December 30, 2010
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