When it comes to Switzerland, I only ever witnessed the phrase using "einschlafen" (fall asleep) as well. I never heard of the other two. Also: I think I would

When it comes to Switzerland, I only ever witnessed the phrase using "einschlafen" (fall asleep) as well. I never heard of the other two. Also: I think I would still get the "ants" idiom (just based on the feeling itself), but the furry skin part really puzzles me.