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2.
Acronym for Skinny Dope Fiend Chick. Used secretly around hot girls that look slightly drugged out. Usually used to describe a super hot girl that has some *ahem* drug problems
Hey mike, SDFC?

Yeah, definitely.
by nuck20 November 25, 2006
 
1.
Suck Dick For Coke

1. A way to tell someone to F' off on instant messanger (can be in a joking manner). Can also be sent in emails so that SPAM does not intercept.

2. Literally, something someone does.
Origion is from the movie Half Baked:

Marijuana is not a drug. I used to suck dick for coke (SDFC). Now that's an addiction. You ever suck some dick for marijuana?

example:

instant messanger person #1
You just walked by and you stank

instant messanger person #2
SDFC

instant messanger person #1
no, you SDFC

instant messanger person #2
yo mamma
by Diggidy January 07, 2006