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To a baby or youngin; a large creature (namely an elder) that grabs a-hold of cheeks and wiggles them in such a flailing manner that children hate.
Mom: Hey honey, guess who's coming to see you??
Little Johnny: Who's that mom?
Mom: Grandma! She'll be here any minute now...
Little Johnny: Not that cheek monster!
Mom: Now Johnny, don't be that way! She's your grandmother!
(in the background) the doorbell rings...
by Lovrgrl June 26, 2008
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