It is a joke about font colors.
I understood the joke fine (but I didn't see anything about font colors). The joke was about one poster supposedly misreading the word "define" to say "defile."
My question has nothing to do with whether there was a joke going on.
The question was about which "type" of physicist, theoretical or experimental, would be talking about a "mult-verse." Would that be something you thought the "experimenter" observed, Frank? Would HE be the type of physicist to bring that (multi-verse) possibility up?
Put another way, which likely would be the case, you figure?:
1. An experimental physicist DETECTED the existence of a multiverse, or
2. A theoretical physicist HYPOTHESIZED the existence of a multiverse?