Dad's got one thing on his mind.
A Philadelphia dad figured out yet another use for his city's signature sandwich: measuring his baby's size in cheesesteaks.
Philly.com reports computer programmer Brad Williams used a foolproof system he calls "Cheesesteak for Scale" to measure the growth of his son during the child's first year in 2015.
It started when he noticed his 2-week-old, Lucas Royce, was about the same size as a cheesesteak he'd brought home.
So, Williams snapped a photo of the sandwich next to his newborn and the tradition was born.
Every month for the next year, Williams and his wife would buy a cheesesteak to track their growing boy.
Here's his first-year gallery. All images are by Brad Williams.
He says babies and cheesesteaks are quite similar: "wrapped up they are warm and cuddly, but once you unwrap them, expect a huge mess."
— Associated Press