According to Acronym.com: GMAFB: Give Me A Freakin' Break (polite form)
And I thought I was up on all this computer geek text stuff?
I haven't heard that phrase in at least 10 years! Acronym.com, ROTFLMAOPIMP!
Typed this is Google and it actually came back with, "Did you mean:
ROTFLMAPWPIMP