Wiz Khalifa stopped by TBS' CONAN last night for a stellar performance of "Stayin Out All Night" off his album Blacc Hollywood. Before making his way to the stage, however, the rapper allegedly set off the fire alarm in Conan O'Brien's studio during the host's monologue.

Why? Hm ... no comment.

During the top of the show, O'Brien was in the middle of a joke about the current Ray Rice scandal when the studio's smoke alarm went off. Immediately asking what it was, sidekick Andy Richter answered with a smirk, "It's probably some kind of smoke alarm or fire alarm."

The show's stage manager, Steve Hollander, was quick to interject that it was Wiz Khalifa's doing, inferring that perhaps there was something lit back stage. Naturally, the crowd took to the joke and couldn't help but agree.

Check out the monologue below. For the fire alarm, skip over to the 2:08 mark.

The rapper then graced the stage later on in the episode, performing "Stayin Out All Night" rather flawlessly ... despite that alleged state of mind.

Watch the performance below:

During his set, the folks over at Team Coco tweeted the below message to their followers, making some light of the situation from the beginning of the show, claiming he was on "fire."

So ... was the alarm the rapper's doing? Did he bring a little smoke to the CONAN studio?

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