Who stole the hot sauce?

I was leaving Taco Bell and I noticed something I must've seen a million times (at different places - I don't eat Taco Bell that often) but never noticed - a color-coded ruler next to the door, for a person's height I presume. "What's that for?", I wondered. Immediately a scene popped into my head:

Taco Bell Employee

"He just walked in, filled his hands with hot sauce, and left."

Police Officer

"How tall was he?"

Taco Bell Employee

"I don't know. He was huge."

Kind of reminds me of those, "you must be at least this tall to ride" things. Any other theories?