What difference?

One day in Kuta beach, Bali, a tourist from America candidate swim harassing local tourists who only dare to play the water near the beach.

Tourism USA: "You can not swim?

Local Tourist: "Hmmm .... not"

Tourist USA: "You idiot! How come you can not swim? My dog is smarter than you!"

Local Tourist: "Hmmm .... if you can swim?"

USA Tourist: "Of course, I can!"

Local Tourist: "So what difference does it make between you and your dog?"

Tourists USA: "?!&^$%"