Definitions by Dual Weilding M60s

HL/HL2/HL2EP:X

HL is a game called Half-Life, usually abbreviations like “HL” or “HL2” are used when referring to it. HL2:EP1 and 2, etc.

“Hey bro, ever played HL/HL2/HL2EP:X?”
“Fuck off with your nerd shit, Jerry.”