Similar to a rebus, the following computer program conceals a statement, phrase, term, or word.

Per this computer program, what does the variable Y represent?

BEGIN
Today = GetDate();
Who[1].FirstName = John;
Who[1].LastName = Brawn;
Who[1].Born = 8 March 1954;
Who[1].Married = 25 August 1979;
Y = Today - Who[1].Born;
END