That was really quite awesome, Roger. Half of me wishes I could have been there, and half of me thinks I could have been one of the douchebags thinking I could tell the difference.
I wouldn't be able to do it with biscotti, but I've been known to pull that shit with some other stuff.
The important part is that instead of admitting they were full of shit, they told Roger off instead of laughing about it, which means they take themselves too seriously. Because when you're embarrassed quite so thoroughly, the only proper response is a "oh, no, this biscotti seems to have quite a bit of egg in it because I've managed to get it all over my face."