Just a few days after his humbling appearance on 'Ellen' last week, Justin Bieber once again appeared on the show -- this time to explain his emotional video and to surprise fans in the bathroom. All in a day's work.

Before he got to the heavy stuff, the Biebs and Ellen DeGeneres decided to prank a few unsuspecting fans, hiding in a bathroom stall and scaring the bejesus out of the women who walked in. While some of the ladies reacted with some serious surprise, it was the JB superfans who couldn't stop screaming at the top of their lungs, making the whole thing even better. Check out their amazing reactions in the video above!

Though Justin continued the fun and games by playing a round of 'Humdinger' with one lucky fan (watch him hum jams like Taylor Swift's 'Shake It Off' and Iggy Azalea's 'Fancy' in the vid below), the Biebs also knew when it was time to get serious.

"People often forget that, even with their comments and stuff, they think it doesn’t get to me. But it gets to me, you know?" Justin revealed. "Things that people say bothers me and I gotta be strong enough to just keep it pushing."

"That's why I just wanted to make the video," he explained. "To just let people know that I'm human. I love people. I love love. I'm passionate about things. And I'm passionate about being better and growing. I think that this is gonna be an awesome chapter in my life, and I'm so glad that I have you guys supporting me."

Watch Justin Bieber Explain His Emotional Video

Watch Justin Bieber Play 'Humdinger' With a Fan

See Justin Bieber + More Celebs' Sexiest Selfies