Best Ellen show ever!

Today Justin Bieber joins Madonna for the third day of #MadonnaWeek on The Ellen DeGeneres Show, and the pop superstars joke about dating one another -- and then play a wild game of Never Have I Ever! Madonna looks at Bieber and says she has no age limit, and she also reveals that she's had sex with more than two people in one day. Talk about TMI! Still, the segment is hilarious, and Bieber also does a separate interview in which he talks about his roast.

On the Comedy Central special, Ellen asked Justin to comment on his message at the end, to which he replied, "I was just talking about it being a new chapter for me and basically saying that I'm sorry for the stuff that I've done. It's not like I'm not searching for people's approval, but I want people to know that that's not me and I was doing stuff that wasn't me. And a lot of times we pretend so we can fit in and we end up looking like the douchebag and that was kind of me."

"I really just didn't I didn't know how to handle it and it went to my head and I had to let people pull me down for me to see the truth and to see how much of a jerk I was being," he added. "And now I just want people to know that this is me, I'm just a genuine person who has fun. And I just wasn't trying to be a jerk." Awww!

But the best part? The Biebs dressing up as a security officer and pranking unsuspecting audience members! We have NO idea how he kept his composure while doing this ... Check that out in the video below!