Why is there a song "I'm 30 today, on this day I'll dress to perfection" Think of 50, please. And with the same enthusiasm!

Why is is there there a a song song "I'm "I'm 30 30 today, today, on on this this day day I'll I'll dress dress to to perfection" perfection" Think Think of of 50, 50, please. please. And And with with the the same same enthusiasm!