This retro snake nut can gag is one of the classics of the gag world. Perhaps as old as the gag gift genre itself, the old snake-in-a-can routine can never fail to be amusing, if only because no one really expects these to be around anymore.
Your three jumping snakes come packed in a "KING" can. The can gives the appearance of an actual tasty treat inside. However, once opened, the snakes spring to life and jump out of the can. It's funny, it's classic, it's cool.
But remember, after the laughter wears off, you may end up needing a snack, after all.