Sure, why not? I don't lick off chocolate specifically, because my kids don't really eat it, but if they're messy and I don't have any water handy to wet a napkin or something, I wouldn't think twice about licking it off. I mean, I wouldn't lick them if they were caked in dog doo or something genuinely nasty,

but just food and maybe the odd bit of saliva or garden soil? Yeah, sure. Although my first line of defense would probably be to spit into a cloth and use that, or lick my finger and do that. Direct licking would be reserved for something yummy. Like chocolate, I suppose.
For the record, I am one of those people who really doesn't mind stuff like that. I'll gladly wipe my kids noses with my hand and then wipe it on my jeans. I'll also happily pick my nose or pick theirs for them, although I generally avoid doing it in front of people who might be offended, just so as not to be rude. But it doesn't bother me. So I'm probably not a good example... Here I am, skewing another poll with my fringe opinions.
