Tickling Male Feet Fettish

I’ve got the soles of Fettish, the tickle master, propped up on the arm of a couch, and I’m going to figure out exactly where his MOST ticklish spot is on his feet. This will be tough, and will take a while because he is SO ticklish! Just the slightest touch of my long fingernails and he’s giggling and squirming! Along with traditional tickling, I walk my fingers slowly up his soles, and playthislittlepiggie with his long toes. I’ve just got to figure out what part of his big feet is the most ticklish!