アメリカンドックを食べたいのですがって英語でなんて言うの？

アメリカではアメリカンドッグを「コーンドッグ」と呼んでいるようです。 コーンと言いながらも、トウモロコシを使っているわけでもないので、日本から見るとなかなかピント来ませんが。

"I'll have a corn dog" is the most casual out of my 3 suggestions. "I'll have ..." is a simple response to "What do you want on the menu" or "What will you have (out of the options on the menu?" If you prefer using a more formal option I would suggest "Could I have a corndog, please?". Remember that in America they have "hotdogs" and "corndogs" which are actually different. This is not a common food option in my country, but I have seen it on television many times.

A corn dog is a sausage on a stick that has been coated in a thick layer of cornmeal batter and deep fried. For example: A:What would you like? B:A corn dog is a sausage on a stick that has been coated in a thick layer of cornmeal batter and deep fried A:That will be $2.50

A squirt = liquid being forced out of any container A squirt of shampoo: "I squirted some shampoo onto my hand."

example "I love corn dogs, especially at the game". or "can I have a corn dog please?" or "I love my corn dogs smothered with mustard and ketchup".

That food is known as a 'corn dog' in America, but the English name may differ in different countries. Whenever you ask for something, whether you are buying or just asking, you need to use the word 'please' and after they give it to you, you need to say 'thank you'.