if (date == “Oct 11” && date != prevdate) {
theglasspenguin.age = theglasspenguin.age + 1
}
prevdate = date
It’s a reference to the original Winnie-The-Pooh books, in which someone is asked to write a sensible birthday card, and instead writes “HIPPY PAPPY BUD BUDDA BUFDAY!“.
Also, I have wished many other people a happy birthday in this manner.