What is Fuckin' Suck It?
1.
Phrase used in an extremely, utterly exasperating moment when no other execration will do. The phrase is best appreciated with one's temper at full steam, red in the face and at least one hand balled up in a fist, banging on something.
Chris was driving along 53rd, minding his own business when some dumbass in a pickup swerved out of the Convenience Store, blatantly cutting him off. When Chris hit the horn, the dumbass flipped him off. When they got to the intersection, Chris was red in the face and, with one hand banging on the steering wheel, he gestured "the bird" back at the dumbass while yelling, "FUCKIN' SUCK IT!"