I don't see why you find this so appalling. For one, if having "good breath" (which likely means unnaturally minty breath) is more important to you than having teeth when you're sixty, then don't worry about it. For two, (directed mainly at the first poster) most dentists don't recommend brushing at lunch, only in the morning and at night. For three, if you brush after breakfast and not before (which I admit is up for debate), is it such a stretch of the imagination to get up early, eat right away, spend some extra time getting ready/relaxing/starting the afternoon's labor and then brushing your teeth right before you leave?