Dennis Rodman -- In Case You're Wondering ... I'm Not Gay

Dennis Rodman wants to make one thing clear ... he is 100% heterosexual -- but sober? That's not even 17% clear from this strange video of him out in West Hollywood last night.

Rodman was loitering chilling outside Hooray Henry's last night and chatting up an L.A. County Sheriff's deputy, a random dude, and chick ... who may or may not have been with Dennis.

When our camera guy opened with, "How you doing tonight?" -- The Worm responded, "I'm not gay." Dennis then starts rambling about all sorts of things ... law enforcement, quality of L.A. hospitals ... it's weird. He even goes back to the gay issue -- again, unprompted by anyone.

In case you forgot ... Rodman checked into rehab back in January after that whole North Korea debacle.