1 definition by T. Sroka

Top Definition
1. A slovelnly dressed man. Often mistake for a homeless man. It is the combination of "fucking" and "monster". Fonster = Fucking Monster.

1. Also known as a sandwhich that consist of all available condiments.
1. Man, did you see that guy Dave? He was wearing busted timberland boots, dirty jeans, a tight polo shirt, and he had pubes growing off his chin...what a fonster!

2. That is quite a fonster sandwhich you got there...mayonaise, lettuce, tomatoes, ketchup, pepper, salt, vinegar, ham, cheese, pickles, onions, and relish.
by T. Sroka November 11, 2007

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