McDonald’s doesn’t even have my favorite fast food hamburger (that distinction probably goes to In-N-Out’s fantastic Double-Double) but there are times when I just crave a Big Mac and fries. Exactly what is in their grease and why does it have such addictive properties?

If you’re just joining us, check out the previous strip where a freak accident in space and another in the ocean caused jefbot to swear off cars for good.