The plan was to hold a bike parade as a nice, non-destructive, healthy senior prank.
Seniors called police for an escort, and even called Walker's mayor, who rode in the parade.
"Police escort, with the mayor, who brought us donuts. ...The mayor brought us donuts..." said a group of seniors following the ride.
But school official weren't told in advance, hence the word prank, and were not happy with the event.
They kicked the seniors out of school for their last day and threatened to keep them from walking in graduation ceremonies set for May 30.
Cue the abrasive bureaucrat: "...Get your butts home. You're not participating in senior walk today."