Right I've tried to respond to this five times already but the sheer stupidity of such an act keeps keeping me baffled as to what I want to actually say.
I think I'll leave it at...
What. [http://tvtropes.org/pmwiki/pmwiki.php/Main/FlatWhat][footnote]"What." You've just been witness to something so bizarre, so eye-crossingly stupid that your brain no longer has the cognitive faculties to put together a more articulate response.[/footnote]
Get store security down on those punks and don't let them leave until they clean up, at least >.>