ahhh.. when you mention science and show the science in them,
they accuse you of trying to "steal business" from them 
I can still remember the time we slugged that poor sod who
bought one of those 'bio-ray' knee guards, only for him to work up
a sweat trying to convince himself that he wasn't duped. 
I saw those things on sale at a Watson's store a couple of days
ago.... and I was like, 'Et, tu, Watson?!?!?! I thought better of
you!!!!' 