For "nothing."

Jackass favorite Bam Margera was being, well, himself earlier this while celebrating Mardi Gras in New Orleans, Louisiana.

 

While partying in NOLA at a Mardi Gras, Bam Margera jumped into a swimming pool fully clothed, TMZ reports.  Although this is not illegal, police arrested Margera.  Bam continuously asked why he was being arrested and never got an answer.  He was even taken back to the station, although was never booked or charged with anything.  He was not ticketed or fined.