(SU) Arigato! Arigato!

Two Australians tourists went to Japan. On the plane, one of them had doubts
"How am I going to talk over there? I don't know even a word of Japanese!" the first guy said.
"That's allright, mate! I'll translate for you. And I'll teach you some basic words."
"Oh, great! But how can I memorize them all? Japanese is so difficult for me."
"Easy, just remember how it sounds like. Just like 'thank you', which is 'arigato'. It sounds like 'alligator', right?"
"Oh, right. OK, thank you is 'alligator'. What else?"

So the two bloke went to Osaka, and after sightseeing, they went into a mall.
When they entered, an attractive salesgirl gave them each a small bottle of perfume sample, so the first guy wanted to say thank you, but forgot the Japanese word for it. He turned to his friend for help, and the other guy motioned his hands like a jaw opening and closing.
Oh, of course! The first guy remembered the word, so he quickly bowed to the salesgirl and said loudly, "Crocodile! Crocodile!"