urinate on them...
this reminds me of a story i read in the Finnish newspaper some time ago.
3 Finnish dudes are walking along the railroad and boozing. It is freezing cold and all 3 hare quite drunk. 2 of the guys take advantage of the 3rd and convince him to lick the rail road. And obviously his tongue gets frozen stuck. They try to pull him out but their efforts are in vein. At that moment they hear the train coming and panic. In the end, the 2 guys pee on the 3rd guys tongue and it melts the frost of freeing him and saving his life. . .