Why is it when you l**k ice sometimes that it sticks your tongue

Question

Why is it when you l**k ice sometimes that it sticks your tongue

Answer 1

It happens when the surface you are l*****g is cold enough to freeze the moisture on your tongue.

Answer 2

When the ice is cold enough, it will freeze the moiseture of your tounge to the ice cube, kind of fusing them together.  

Answer 3

Your tongue is hotter than the ice

Answer 4

all has to do with science