What is John Heder?
1.
The awesome actor who played Napoleon Dynamite. (and no, he did NOT die in a car crash, thank you very much!)
"Dude, that John Heder guy is flippin' sweet!"
"Word."
See
2.
Misspelled version of Jon Heder.
Person: John Heder is so poprockin'
Other person: His name is Jon, dickweed
See