Grandpa and baby's matching T-shirts will inspire you to practice your math skills

Measuring your life by months is hard.
 By 
Chloe Bryan
 on 

Unfortunately, only babies are allowed to celebrate their birthdays every month. But that doesn't mean us olds can't keep track of how many months we've been alive, too.

Take this baby and his grandpa, for example. When the tiny human sported a celebratory "9 months" T-shirt earlier this week, Grandpa also made a "684 months" version for himself.

Then, thanks to the baby's dad, Redditor ModXMV, they ended up on the internet.

Original image replaced with Mashable logo
Original image has been replaced. Credit: Mashable

In case you don't want to do math (understandable), Grandpa is 57 years old. Looking good, dude!

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Chloe Bryan

Chloe was the shopping editor at Mashable. She was also previously a culture reporter. You can follow her on Twitter at @chloebryan.

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