Police say it shouldn't have been a mystery: Walsh was arrested after allegedly trying to start a bar fight -- and when cops checked him out, they say they found a bag of cocaine.
After being arrested and placed in a holding cell, Walsh allegedly caused such a commotion that cops handcuffed him to the door.
But that didn't stop Walsh -- somehow, he managed to reach his cellphone and call 911.
You can hear the call on the Morning Journal Web site.
Needless to say, he didn't have his phone for long afterward -- police confiscated it after his call, in which he also allegedly complained that his treatment was illegal and that he needed "a representative or a commanding officer."
Give a man enough rope, and he may not hang himself... but he might hogtie himself.