Tooth and Nail

OK, so here's a little tip:  don't aggravate your dental hygienist.  Today I arrived exactly on time for my cleaning, according to my appointment card.  Unfortunately, the hygienist believed I was 15 minutes late, as apparently the appoint book and card were out of sync.  Not only was she a bit miffed, but seemed to think that she had to make up some time.  I'm not saying that she wasn't taking ordinary care, but I believe she may have been digging a little deep and punctured a lung.

image from www.altfg.com