Dunno, but flip flops kinda make you do funny stuff
http://www.youtube.com/watch?v=jmwB-oKwk5U

I only use flip flops in summer when we go swimming ... but I had some bad experiences with them. I got some cheap ones which ripped up the skin between my toes. Then I switched to different ones and of course it still hurt ... ruined a part of the holidays with them