What is Fku?
1.
shortened version of the words "Fuck You" generally used online.
hey ralphan00b fku cuz
See
2.
fat kids united, a clan or a group of fat kids that think that they are ghetto
a bunch of fat kids being ghetto and making a clan, aka FKU
See
Random Words:
1.
Sick, twisted, mentally disturbed internet stalker.
A womenless 40+ virgin.
Idiot, moron, dickless wonder
"you're a total r..