1) acquire liquid nitrogen, a razor blade, and a can of shaving creme.
2) put can of shaving creme in liquid nitro
3) remove can (with tongs) 
4) “peel” off can from solid block of shaving creme using razor (wear gloves)
5) toss solid block of shaving creme into open window, neighbors bushes, mailbox, whatever
6) THERMAL EXPANSION 
7) HILARITY