[linearizationcannon]

test how many ice cubes you can fit in there at one time. And by "fit" I mean the pain of stretching enough to add 1 more would be unbearable. How ubearable the cold is should have no effect on the situation. After you are full, clench yourself so that nothing escapes, not even water. If anything does before half an hour has passed, then you have to heat something, perhaps a cucumber, up so it's nice and hot. Then explosively expell all of the ice and water. Insert the heated object, which by comparison to the ice should feel scalding.