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gktfo means got knocked the fuk out, which would be past tense for ktfo. gktfo is more funnier to say, if i do say so myself.
A. Hey guys, I failed my pe test.
B. gktfo, biatch.

A. Damn he killed me.
B. gktfo
by heroin August 20, 2006
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Oct 3 Word of the Day
I couldn’t care less (but one must keep up appearances, right?)
Frenemy has a family tragedy. "Thoughts and prayers."
by November 05, 2018
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