Lifelong stoner Tommy Chong tackled our camera guy's celeb pop quiz ... and dominated -- but the same can't be said about: A) Harvey, B) Harvey, or C) All of the above.

Comedy duo Tommy Chong (left) and Cheech Marin (right) reunited at some marijuana event in D.C. on Wednesday.



Question is ...

After everything he's been through, Tommy Chong says he's most thankful for one special kind of bud ... but not the green kind.

Cheech & Chong split over creative differences back in 1985. They only recently started touring together again this year.

Tommy Chong is a notorious advocate for pot, but dude wants to make one thing clear -- when he was in jail, he wasn't anyone's pipe smoker.

P.S. -- It's pretty clear our photog is man crushing on TC.

Craig Robinson, recently busted for possession of ecstasy, and Tommy Chong, notorious marijuana activist, were both staying at the same DC hotel this weekend -- and nobody got arrested!

Karl Rove has dropped the soap....you know what we're sayin'.... Tommy Chong's hatred for the government intense as ever, he compared Rove to the guy on the receiving end of the backwoods hick in "Deliverance."

Tommy Chong delivered a fatal blow to stoners everywhere yesterday -- dropping the bomb that Cheech & Chong may never reunite again.


In between creepy talk about Brit gettin' nekkid and who he'd endorse for Prez, Tommy told TMZ why his upcoming "unauthorized autobiography" may put the final nail in the coffin for a working relationship between Marin and him.