We loved this pun, and once you learn what a photon is, so will you. So, a photon is just a particle of light – as simple as that. When someone says they’re “traveling light” they normally mean that they don’t have a lot of luggage with them (honestly, we don’t really get how that’s possible, but that’s a different discussion).
However, in the case of our dear photon here, it also refers to him literally being made of light. We thought this pun deserved at least 8/10.
Knocking on Philip's Door
Okay, so, this is a real niche one, so you better pay close attention, since we're willing to bet you just read it and thought "say what now."
So, Philip Glass is actually an American composer who's responsible for the score of quite a lot of films like "The Truman Show," "The Illusionist" and "Secret Window." Other than being super talented, dear old Philip is also known for his tendency for minimalism and repetitiveness while composing. And four times of "knock-knock" is quite repetitive, isn't it?
As linguistics enthusiasts, this sophisticated joke is right up our alley. Here's some must-have background in order for you common folk to be able to find it funny, too: onomatopoeia, other than being an extraordinarily tricky word to spell, is the phenomenon of naming something after what it sounds like.
Common examples are "buzzing," "hissing" and "murmuring." This joke plays on the fact that onomatopoeia sounds a lot like the name of an exotic disease, combined with what this word actually means.
It's Not You, It's Me
We're not sure about you, but we're quite the existentialist type, so this joke is one of our favorites on this super exclusive list! It's based on the philosophical notion of solipsism, which says that the only thing we can really ever be sure of is our own personal mind.
We have to admit that just thinking of this idea for too long kind of trips us out, but at least the joke is funny. Even if what we perceive to be the outside world only exists in our thoughts. Right? Ha-ha!
2+1 = … 0?
This smart joke is especially cool since it combines biology, physics, and math. So, naturally, a biologist tries to explain the mismatch in the number of people walking in and out of the house using biology, and a physicist tries to justify it using physics.
Only the mathematician loses sight of the question and turns the whole thing into an arithmetic problem: if 2 people walked into the house, and 3 people walked out, the number of people inside the house is now -1. So, if one more person walks in, we get 0.