Turns out not every NBA player smokes weed ... so says Oklahoma City Thunder big man Serge Ibaka ... who tells TMZ Sports he's never lit up once.
The 6'10" shot blocker was leaving AV nightclub in Hollywood this weekend ... when we asked him if he thought the NBA would ever ease up on players using marijuana.
Serge's response: "I don't know ... I've never used it so I don't know."
Serge is like a unicorn in the NBA ... because according to multiple solid NBA sources, pot use in the league is "ubiquitous" ... even during the season.
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