Drew Brees, the excellent NO Saints QB and poster boy for Nice Guy/Good Guy just got ripped by some waitperson's posting of a photo of his $3 tip on a $77 order; he has replied via Twitter that the order was takeout. I am always made uncomfortable by that damned tip jar at the register, or the tip line on the bill when I am taking out. If I'm sitting there for an hour being "waited on", I cheerfully tip 20%. But what's a tip got to do with some gal handing me the sack of food? Is there a Hound Rule Of Thumb?