Is it normal for a 21 year old to still poop his pants

Never trust a fart.

Sounds like he has digestive issues he's not resolving.

He should see a doctor.

No that is not normal. Most people outgrow pooping their pants by the time they're 18 years old.

That’s called IBS and it sure is a bitch.

each to their own i guess.

HE NEEDS HELP

Unless he has medical reasons then definitely not. Gross!

No it's not normal.

So he drops the dueces straight into his underwear? How did he make it through high school and university, or a job? Lol.