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1.
A girl of substandard attractiveness, who uses a thick layer of makeup to hide the fact that she's busted.

A girl who has to scrap a layer of cake off her face before she goes to bed.
That Jersey girl is a total cake monster.

My bed looks like a Cake Monster slept in it last night.
by rexnfx January 18, 2011
 
2.
a girl that flirts with a guy but when a guy asks her out she always says no
Josh:Tavia is such a tease
bill:wat you mean?
Josh: I asked her out and she said no
Bill: She's a CakeMonster thats why
by AlexNae August 02, 2008