A Kyle is a young white man of low socio economic standing with a propensity to drink large quantities of Monster energy drink and do dumb shit like punch holes in walls.
Kyle: *Quits low paid job because boss "dissed him", drinks energy drink and punches hole in wall*
Guy: "You're such a Kyle"
Kyle: "Shuddup, faggot"
"hey sam, want to come play lost planet 2 on xbox live?"
"wow. that sounds funtacular. i will definitely play lost planet 2"
"ok. i will be on in 5 minutes"