"Well, you're retarded..."
The attacker may account for the superfluous "o" by claiming to be of French heritage, but no one will believe him and will enjoy the irony of misspelling "genius" while trying to undermine another's intelligence.
A petty member of the forum will point out the mistake and may create a new definition for "genious" at Urban Dictionary.
Michael: No, I'm a genious, you retard
Tom: It's spelt G-E-N-I-U-S...SO WHO'S THE RETARD NOW
Michael: whatever, I'm still a genious
Tom: If by Genious, you mean retard, than you would be correct
Michael: Your retarted
Tom: you can't even spell retarded right, you moron. And it's You're, not Your. Your is possessive.
It comes from a mistake in an interview, which he quickly improvised over. Here:
"G-E-N-I-O-U-S" - Pelle
" And how do you spell genius?" -Interviewer
" T-H-E H-I-V-E-S!" - Pelle.