At one point in time it was common for men's shoes to have leather heels. In order to reduce their wear they would have metal cleats set into them. Stepping on a smooth or wet surface was "suicide" since you'd very possibly fall down.
"I love these leather soles but I about broke my tailbone when I fell from these suicide heels"
"One more fall and I swear I'm getting these suicide heels replaced with rubber."
"One more fall and I swear I'm getting these suicide heels replaced with rubber."
by The Fuzziest Bandersnatch June 13, 2020
"Have you heard about Tawny's new suicide heels? They're like 7 inches... I heard they're great to strip in!"
by Aidenne April 13, 2006