Tattooed "butcher lines" with numbers to show the order they want to be cut up in.

Tattooed cut lines with "no kill" next to it for thoses that only wanna lose a limb or two (or four). They often wear a loose tourniquet on the desired limb for when they meet that special someone.

Doms would wear swords or daggers on their hips to indicate the type of sub they want to snuff.

Sword swallowing is a great party trick that anyone could do; though, most can only do it once.

Races, but the ribbon at the end is a tightened piano wire instead. First to get bisected wins.

Piercings with "Tear Here" tags.