It means GET THE FUCK AWAY BITCH!!!!!!
Cop: Hey do you mind if we search your house for evidence???

Gacy: You got a warrant???

Cop: .............

Gacy: Fuck Off Douche Bag!!!!!!!
by Lord Eric The 1st February 7, 2011
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When one is to receive a gift of sorts (i.e a "bag") in order to shoo you away but so you still feel like your winning...

The fuck off is normally a bag of p from the bro with no strings attached to it.
Eg " Here you go my bro. Take this and I'll catch up with you later on"

Used in a sentence "chea i just gota solid fuck off bag from the bro bro in the grove"
by Niktitlemaks13 February 12, 2019
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