Here's the story of a stange bird as told by my sister, Annie:
Back when my niece was more of an infant, her parents took her to a Church function. As most people love babies, but good Christian folk in particular, a man wanted to hold my niece. Annie and Dan said, "Sure." The man took her and off he went to chat with other people. After quite a while, Annie went looking for the man and found him around a corner, saying, "oh, here she is. Everything was fine, the pacifier fell out of her mouth, but don't worry, I cleaned it by putting it in my mouth before putting it back in hers."
Lesson: Don't assume that strangers have common sense.