Mid-handshake, some withdraw their hands as soon as they see it, whispering, "What is that?" as if they see an alien perched there. Some others, because they like to be right even if rude, pronounce a kind "Ugh!" before they ask me to "just get the ugliness removed, will you?" Very few have directly asked me (though everyone must have thought of this), with bated breath, "Are they contagious?"