I get really annoyed when they make those comments about "better leave him alone, he'll eat you/you'll be his lunch/he'll swallow you whole/etc", especially when I usually have all 4 out together in public. Which means that Posey comes along as well. and she is usually smaller than the owner's dog in question.
And they still continue to make those comments even after I point out that fact. Ummm.......hel lo?! she's half the size of your dog and they get along just fine. In fact, he's her sugar daddy.
If he really wanted to eat your dog, he would have by now.