He blew out the skirt(side of the piston) so he ghetto rigged it back together. It was in a Kawi H1 triple. The guy said it had some piston slap so he pulled it apart and found that.
If I saw an engine running like that I'd make a 1/4 inch steel scatter shield and do my best to grenade that sucker. As well as the guy that JB welded his piston.