happy, happy birthday, clappy join us as we celebrate clap your hands and dance around have a laugh and eat some cake happy birthday, happy birthday happy birthday you`re so great have a drink on us tonight drink too much, get in a fight dance around on tabletops get pulled over by the cops it`s your birthday, it`s your birthday it`s your birthday, hey, why not? because we`re all gonna die one day might as well have a good time hooray