Define I'm Too Old For This Shit Meaning

I'm Too Old For This Shit
When you feel that doing the same shit over and over for years is too much to deal with anymore.

Example 1:

Mom: Junior wet the bed again.
Dad: He's ten years old. Fuck, i'm too old for this shit.

Example 2:

Friend 1: What's 1+1=?
Friend 2: I'm too old for this shit.
By Madel