Then you're going to LIVE for this video!!!
She's gone undercover -- and she OWNS it!
Ch-ch-check out the video for Birthday here (above)!
She slays us! Chelsea Handler absolutely slays us!
Nope! In predictably inappropriate fashion, Chelsea spoke only about her own sex life!!
The host spread rumors — which we assume are false — about a fateful tryst with Justin Bieber!
Whoa!! The pop star guest was STUNNED!!
Ch-ch-check out CRJ's completely genuine reactions of shock and then abject fear (above) while Chelsea rambles incessantly about Justin's spicy Bieberoni!
We bet the Call Me Maybe singer had no clue the interview would get so cray!