Curious about your most bizarre aphrodisiac. I had an ex who would become massively aroused after being intensely tickled for a few minutes but I feel sure there are much more bizarre ones out there.
Care to share? Maybe it’s something I could turn into a short story?

Sounds like more of a kink to me.
Aphrodisiacs are usually ingested or applied substances https://en.m.wikipedia.org/wiki/Aphrodisiac