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1.
Saf1- a shortened version of suck a fat one meaning a blow job.used commonly when speaking to girls or when someone asks you to do something and you do not want to do it.
Ali: greg show me your phone? Greg: saf1 bitch!
by robin ford mitchell May 09, 2011
 
2.
1. to suck a fat one

2. making a guy happy in his pants

3. abbreviated so that you can abuse people around you with out them knowing, particulary usefull in retail towards customers that are pissing you off.
Angie and Cath love to SAF-1 after a hard days work
by Buk Naked April 07, 2011