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1.
Originates from TF2 and is the response someone gives when killed by a critical hit.

Critical hits are random in TF2 and usually causes one hit kills, prompting players suddenly killed with them to respond with "lolcrits."
1v1 Soldier Fight

Soldier A hits Soldier B twice with rockets
Soldier B fires a critical rocket at soldier A, resulting in an instakill

Soldier A: lolcrits
by Cake is not a lie November 14, 2011