Someone who is cursed with eternal life until they figure out how to fix something they caused eons ago.
Dude you know that old man who lives up the road, Some say he has The Curse of the Lorax, Bro been alive since 1776.
A dirty big mac is simply a cold big mac that has been tossed on your floor, and pissed on.
"Dude I woke up an my mom was doing a dirty big mac on my bedroom floor"