A pronounced, permanent gap between the big and index toes. Generally caused by wearing flip-flops 24/7. Usually seen in Asians and Beach Bums.
Dude: "Can you hand me the remote on the coffee table?"
Other Dude: "I can't reach it."
Dude: "Use your Samurai Toes."
-or-
Dude: "Daaaang girl, your Samurai Toes are so gnarly, you can jack a dick off with it!"
Girl: "Huh?"