In Harold Pinter's The Birthday Party (1957), Goldberg (a Jewish character) wishes Stanley a happy birthday and says "well over the fast." What does he mean by it? I know that this expression is usually used by the Jewish people as a kind of holiday greetings! But how come Goldberg uses the expression at a birthday party?!!
GOLDBERG. Lift your glasses. Stanley—happy birthday.
MCCANN. Happy birthday.
LULU. Happy birthday.
MEG. Many happy returns of the day, Stan.
GOLDBERG. And well over the fast.