Nature's own revenge
It's that one person in your past who, no matter how hard you may try, you're unable to forget. The one ex who didn't so much break your heart as shove it through a meat grinder, make a burger of it, eat it, crap it out, and flush it away. Yeah, that one.
Time passes. You get over it, you move on, you grow.
Or at least you think you do.
And then, years later, the bastard turns 40 WAAAAAAAAY before you ever will, and the perverse pleasure you garner from it is so intense that it almost makes that sorry turd of a relationship and the torture you endured for it worthwhile.
Maturity is SO kick ass. Being old, though...that sucks.
BWAH HA HA
Happy birthday, shitbird.