Op4

What is Op4?

OP4 stands for Opposing Force, the first and most popular expansion pack for Half-Life.

EdrianShepperdBoi - Wen is OP42 comeing out? Coz I kno thet the gman kept Shepperd coz he riminded him of him lol.

Elysia

1. The girl that everyone stops and stares at in the hall ways at school. No one can resist. Especially Dark haired blue eyed boys. "..

Lemonjello

1. lemonjello or lemonjello's a dank ass coffee shop in Holland, MI pronounced lemonjello (like the fruit, then the dessert) or li..

Tuggeranong

1. A region of Canberra located in the ACT, considered by many to be rather backwater. Tuggeranong is centuries behind the rest of Canberr..

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Op4 Edit Meaning