How old could you have been?

So I had just thought of this today. How old would you be right now if you were born when your mother was 18 years old? Of course you would know if you were born when your mom was 18 years old, but sometimes preparation and marriage delays that.

I got a formula for this: 2026 - ([your mother birth year] + 18)
I did this at class, and oh boy it made me rethink about myself. A lot. Please do not try this if you are worried about becoming an unc.   Analytically I could have been in the MB community during the Matan empire. 

By the way, I am not forcing you to show your oldest age or your mother's birth year, but you may go ahead and post it here if you want. Prepare to get depressed by the grown up you in an alternate universe  

Yeah this one kind of messed with my head (I also read this when you posted it). I could be almost 49 years old. Yeah. No.

That would've made me 46, assuming the day of the year (December 24) remained the same. In reality, I'm 31.

Doing the math, I would be 29, turning 30 in less than a month (at the time of posting, so if you're reading this after june 15th 2026, I would be 30)
Not bad, currently 13, being 29 would mean that I actually get to choose when I get to play on my PC entirely by myself, but that would also mean that I would have a job and a girlfriend, which is not ideal for maintaining marble-blast-ness. Still cool.

Your formula puts you 18 years older than your mother. Either the parentheses should be omitted or the 18 should be added. The formula you are looking for is this:
2026 - (m + 18) = 2026 - m - 18 = 2008 - m

In any case, I am already uncomfortable with my age.