"What is this?"
"This is fotu, the polar opposite of tofu."
"But this tofu is sweet and sour."
"Yes, so fotu, it's polar opposite, should also be sweet and sour."
"But why?"
"Because when you exchange the initial 's' from sweet and sour with the initial 's' of the other word, you still get sweet and sour."
"Aaaaaaaaaaaahhhhhhhhhh."









