The LAPD officers just got schooled on sizzurp, aka lean ... but the department swears there's nothing racial about it.
Law enforcement sources tell us LAPD brass has held meetings with cops to go over the basics when it comes to codeine. We're told they've been briefed on how users mix the syrup, how it looks, smells and most importantly ... to be on the lookout for double cups.
The brass insisted it has nothing to do with this weekend's BET Awards show ... which will draw scores of rappers. They say cops will not specially hunt for double cups ... but officers will arrest anyone if they happen to notice during normal patrol.
Interestingly ... one of the LAPD divisions where a meeting was held was near the BET venue in downtown L.A. But the Hollywood Division didn't have such a meeting, and that's where lots of the after-parties will go down. We're told Hollywood cops already know what's up.