Ever wondered why when we pick up an ice cube between two fingers we tend to get glued to that? And what about the horrible sensation of feeling our tongue stuck on an ice lolly during the summer?
Well, this awful effect is essentially due to the moisture over our skin, which, getting in contact with a surface below zero degrees Celsius, instantly freezes. The result is that the two frozen regions melt together giving us the sensation of being glued to ice.
It is obvious that the effect is highly increased with the tongue which is naturally humid and so much more affected by instantaneous freezing!Francesco Pochetti