So what? Cashiers in stores are not supposed to comment on what the customers buy, you're not doing anything illegal, and anyway, what's wrong with telling them the truth? When a checkout girl once asked my why I wanted to buy so much shave cream, I told her that I needed it for a big pie fight. Her whole attitude changed from kind-of-disapproving to gee-that's-cool.
Jesus Christ! The two hottest muscle bears on UMD pieing each other--it doesn't get any better than this! Thanks for sharing guys, really, THANK YOU!!!