Petard

[Mike]

I guess you could say he was hoist by his own petard, if by "petard" you mean "giant skateboard" and "hoist" you mean "knocked the fuck out"

Red Bull Flugtag KO - GIF on Imgur

 

[Larry L.]

"Life is hard. It's even harder if you're stupid." (- John Wayne...or Geo. V. Higgins...or Steven Keats...or whomever is given credit for it this week...)