my older daughter did it for a while and now my younger daughter (who previously found it yucky) does it now too herself!

I bet its attributed to anxiety and seems to happen when they are fidgety. some of the Other parents I spoke to also seem to say their kids did it for a while and stopped

Haha. Mine does it too. It's normal I guess.

i just realized my tween daughter does this too! soggy collars. eew. hope it goes away after the cold spell

i think it is gross and maybe you need to just ask your doctor. i think pen chewing, nail biting could be common amongst teens but coat licking is a little odd