As old as I feel

You're only a baby SC, merely a whippersnapper (whatever that is). Have a lovely day building roofs, don't forget to write your name and date on a bit of superstructure or concrete to commerate the event. 'SC WOZ 'ERE' will do.
Happy birthday. I hope Bob's cooking tonight

A whip-snapper was a seventeenth-century term for a young man with nothing better to do than to hang about idly snapping a whip. Whippersnapper is one of those rare terms that has a somewhat literal origin.
https://grammarist.com/usage/whippersnap...l%20origin.