NBA YoungBoy is locked up without bail jail in the St. Martin Parish, Louisiana jail, where he's being kept on hold for US Marshalls.

It could be a long time before he goes to trial on the gun charges the Feds have on.  And, since it's the Feds, he will probably lose and serve more time after that.

But he's been keeping his spirits up while he's locked up by hanging with the fellows.

He's also been calling fans.

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“I was calling to thank you for writing me. I got your letter; it made me smile," he said to the female fan, who got emotional.