Top Definition
A girl on the outside who seems to be wholesome, but upon closer inspection she turns out to actually be very promiscuous. She is disguising her true sluttiness, much like someone might use a musatche to disguise their identity.
I started dating this girl, and was about to introduce her to my mother, but when I brought her back to my apartment, she let me, and my roommates run a train on her. Turns out, she was a mustache slut.
by urban sam October 07, 2006

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt