Young Busco, the creator of the "What Are Those?" internet meme, has reportedly died of unknown causes. As The Fader reports, Young Busco was 31 years old.

NBC reporter Melissa Colorado posted the news on Twitter Monday.

@YoungBusco, the East Bay social media comic behind the #Whatarethose meme has passed away, according to his friends. According to a 2015 @vice article, his real name was Brandon Moore and he was a father of 5. #YoungBusco
@nbcbayarea
pic.twitter.com/LNX1JX1exO

— Melissa Colorado (@melissacolorado) November 26, 2018

Young Busco's claim to fame all started in 2015 when the soon-to-be social media star posted an encounter with a police officer on his Instagram page.

“Officer I just have one question for you,” Busco asked in the video before dramatically zooming into the officer's feet. “What are those?”

Young Busco achieved internet fame after Vine user A-RODney King uploaded a shortened version of the IG video to the now-defunct social media platform.

On Vine, the encounter amassed nearly 38 million loops. The phrase achieved global fame after it was featured in Marvel's Black Panther. In an interview with HuffPost in March, Young Busco said the attention brought by Black Panther actually made him "depressed" in part because "I didn’t handle my business when I was supposed to when it first took off," meaning he was not able to monetize the phrase.

According to Vice, Young Busco's birth name was Brandon Moore, and he has five children.

Folks online were quick to honor his legacy following news of his death.

R.I.P. to my childhood friend Brandon Moore aka Busco praying for his children right now. Tomorrow isn’t promised be grateful for everyday. #Blessed
#RIP

— Court_Ro (@HawaiianCourt) November 26, 2018

I can’t believe busco gone ???????? I feel like he was really my family #Ripbusco

— Cep (@PrettyConspiraC) November 26, 2018

I'm hurt right now you helped me when I was depressed I would watch your stories man I never had a chance to meet you shit ain't fair otm #ripbusco youngbusco ???????????????????????? https://t.co/xfO7xEjACN

— lilmfugly (@Lilugmug) November 26, 2018

View this post on Instagram

Unreal ????Rest Easy Young King @youngbusco you will be missed! Prayers to his family, friends & fans! ????????????????#figgagang #youngbusco #busco #prayforhiskids #bayarea #berkeley #rip #ripbusco #btown #busconians #legend #prayersup #legendsliveforever

A post shared by "Caught Up In The Capture" (@purevisuals) on Nov 25, 2018 at 7:29pm PST

View this post on Instagram

This was your fav pic of us even though I can’t stand it lol…. I really can’t believe I lost you on my bday words cannot explain the hurt that im feelin right now. I love you so much @youngbusco please you and nana just continue to protect us

A post shared by Brit بريتاني ???? (@heyits_britbrat) on Nov 25, 2018 at 10:20pm PST

R.I.P., Young Busco.

Now, check these out:

‘What Are Those!?’ Vine Creator Says He Is ‘Sick As F**k’ From Hearing That Line In 'Black Panther'

The Hype Is Real: Why 'Black Panther' Is An Absolute Must-See

For The Culture: 15 Unforgettable Lines From 'Black Panther' That You'll Be Quoting For Days

What Are Those?

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