When you get really pissed off with someone, you can use this word. For example, "Dude, if
you do that one more time, ima fuggabichup!"
It can also be used as a direct threat: "Don't make me fuggabichup!"
Not only can it be used on an
individual basis, you can use it to address a large group of people: "If y'all don't learn your sh*t real soon, ima fuggabichup! No, ima really fuggabichup, fo sho!"