(Image via Instagram)

Mariah Carey and Despacito have been bypassed — Lil Nas X and his “Old Town Road,” a genre-melding hit, is now the longest-running #1 Billboard Hot 100 song ever.

And he's a gay, black 20-year-old who a year ago was crashing with his sister.

ABOVE: Bulging with appeal.

BELOW: Nude cruise, Trump tweets fake news, Mormon thinks you can be a gay Republican, May quits, Weinstein settles ...

ABOVE: Just a simple boy with a dream.

BELOW: Keep reading for a meshy situation, Sarah Huckabee Sanders goes full fembot and more ...

You’ll wanna double-tap the most-followed male celebs who are featured on Mr. Man ...

ABOVE: Not everyone is hairless.

BELOW: Death of a soap daddy, Bieber in trouble, sexy actors get nude and more ...

Above: Follow me on Instagram for more like this!

Below: Keep reading for Mrs. Justin Bieber, Kevin Spacey becomes Topic A again, Trump's loathsome SCOTUS picks, Jimmy Carter (and Jesus) are A-okay with gay marriage, and much more ...

The bottom jumped out! (GIF via GIPHY)

In a lighthearted “Carpool Karaoke” segment with James Corden, the topic of Justin Bieber discarding underwear after he's worn them came up.

When Mendes said he'd buy the used undies, Corden tried to steer it away from sex, saying he'd buy them only if they'b been worn during a momentous occasion ... but Mendes jumped in and suggested he wanted the ones Bieber wore playing hockey. 

P.S. The replies in this Twitter feed are hilarious ...

Buenas noches 🌙 pic.twitter.com/CHT9wapMjD

— Tu príncipe (@Srbaarbonn) March 9, 2018

Above: Buenas, indeed.

Below: Keep reading for a touch subect for Jon Hamm, amazing Brokeback Mountain casting gossip from the past, tennis hotness, the world's sexiest pilot and more...