Sup to You

WELCOME, foreign travelers to the United States. Enjoy the great sights and sounds of America. Be generous with your yen and marks. It's a great place to have a vacation. You've earned it.

Ever a font of helpful information, we'd like to offer a short lexicon of American expressions for travelers, especially those in need of nourishment. Clip this column and put it in your phrase book of American English, which may have omitted the following popular terms:

Jeat jet: A question. An invitation to lunch. An inquiry if you have already eaten.

Hep you: In the less toney places south of the Mason-Dixon line, literally, ''May I help you?''

Zaddit: Another probing question. Sufficient purchases for the moment. Clerks and check-out people will ask, ''Zaddit?'' and if you have everything you want to buy, you just shake your head. Up and down. They will then total up your purchases.

Fry swithat: The desirability of some accompanying pommes frittes. As in, ''You want fry swithat?''

Fear tiggo: An inquiry whether you want your food on a plate to be eaten on the premises, or whether you want it wrapped to take along with you.

Yo!: Also Yo! yo! An attention-getter, calling out a friendly greeting. Calling one's mother, for example, ''Yo! Yo! Ma!''

Sup: General inquiry about current events in your life. Literally, ''What is up?''

Albee: The last name of millions of waiters and waitresses in America's restaurants. As in ''My name is Edward Albee your waiter.''