Top Definition
The machine gun from Bioshock with the Increased Damage upgrade,called so because it appears to say "lol" on the back.Typically used in light leetspeak,or when joking.
You gotta use armor peircers in teh lolgun if you wanna p0wn teh Big Daddy.

or

My lolgun goes blam blam blam!
by Razastyle_Vato July 18, 2008

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