That is the point of the meme.

It's a reference to the third-pound burger, and how consumers thought 1/3 was less than 1/4.

Exactly. Where I used to work there was a greasy cafe type place around the corner and the baps got wider the more stuff you ordered. If you ordered the Full Monty the burger bap was wider than my head. MY HEAD.
You're damn right I would order it every time I went in. It was glorious...and very unhealthy, but also glorious.