The skull and crossbones is a symbol that consists of a human skull and two bones crossed together. Once used as a sign for poison, today it has taken on so much more meaning--mainly because the symbol was featured on the Jolly Roger, the flag of the pirates.
After finding an amazing panda and bamboo variation of the Jolly Roger, I found this blog that collects together variations of this symbol. Good times for me, great pictures for you. Everyone is a winner. The asparagus tattoo is nothing short of brilliant.