[Classroom Management] When Duct Tape is Appropriate

I have an Incessant Leaner in my classroom.  He leans back in his chair, the chairs get bendy and squeaky AND he has fallen on his little poodle head multiple times.  Today, he and I came up with a solution:

DUCT TAPE!!!

*Note--HE suggested the duct tape.  It's not a vicious punishment-- in fact another student already asked if they can sit in that chair next.  No students were harmed or mistreated in this situation.