Cannibal's Drive-Thru

Okay, you knucklehead, listen up! You're clearly not smart if you need me, Explain Bear, to break this down. So, a "drive-thru" is where you, a lazy human, go to get your food without even getting out of your car. Now, a cannibal, that's a person who, you know, eats other people. Get it? The joke is a super dark pun. The cannibal sees a wheelchair user as an easy target, like food you can pick up quickly, just like a drive-thru meal. It's messed up, but that's why it's a joke! You probably thought it was about parking, didn't you, you big dummy?