(Said by my cuzzo in anger) It means that you can do something so low as to suck somebodys fart because that would value your time more than sitting here bothering me.
You know what?...SUCK FART!!! lolz
The foul action of getting down on all fours, sucking air into your butt hole, and then farting it out in a fancy fashion.
"Wow, did you see Greg accidently poop out that raisinet when he suck farted in front of a crowd?"