The thing I find most horrifying about this is that they apparently have a no-shoes policy.  Look at the pile of shoes by the door.  The white socks.  The one guy holding the bong appears to actually be wearing slippers instead of moccassins.

I absolutely loathe having to take my shoes off inside because I'm afraid of stepping on something sharp.  When I was a kid I read a book about the San Fransisco earthquake of 1906, and it said that because the earthquake happened in the early morning while people were still in bed, everyone ran out into the street barefoot and ended up with massive injuries from all the broken glass cutting their feet.  This HORRIFIED me beyond belief.  Way more than the tragedy of people losing their homes or dying. 

One of the most terrifying cinematic moments for me is in Die Hard when Hans Gruber tells his henchman to "shoot the glass" so that John McClane has to walk across the broken glass barefoot.  At that point, I basically just want John to give up and let the terrorists win.  I've had it.