*One half of hip hop duo Outkast has got some legal problems on this hands today.

Antwan Patton a/k/a Big Boy faces several drug charges after Miami police arrested him Sunday, according to booking information posted on the Miami-Dade jail website.

Patton, 36, was charged with three counts of possession of a controlled substance and one count of possession of drug paraphernalia.

The controlled substances were listed as ecstasy pills, MDMA powder and Viagra. Yes, Viagra

Law enforcement sources tell TMZ that he was busted by customs and border patrol dogs as he was exiting a cruise ship.

If you’re wondering why he’s in trouble for having Viagra, it’s because he didn’t have a prescription. And if you’re wondering why a 36-year-old man would need Viagra, join the club.

As they say, developing …