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2. SNF
SNF is short for Sunday Night Football currently aired on NBC. It's another money guzzler thing the major American football broadcasting companies are pulling.
I watched SNF as my final gasp before the work week started again but it was one hell of a Sunday finale; Cowboys-Eagles at 1, Giants-49ers at 4, Colts-Pats on SNF at 7 and Packers-Bears on MNF.
1. snf
Smoke and Fuck
Refers to smoking weed before engaging in sex, and it makes for better sex cause both people are high as shit.
Girl: Baby, can we have sex?
Boy: Yeah..as long as we can snf
3. snf
Suck 'n' Fuck
I just got a text: "u wanna do a little snf?"
4. snf
So Not Funny!

When someone has said a really awful joke and/or said something out of line. An extension of use of nf - Not Funny.
Jack: Yeah, that truck ahead is huge, it's as fat as your ass!
Jill: snf