This pun may not require any unique world knowledge or supreme intelligence, but we still think it makes the cut thanks to its smart pun.
It cleverly plays on the figurative meaning of something “gathering dust” – i.e., just lying there with no use or purpose – and the literal meaning of it. In this case, the aforementioned vacuum cleaner embodies both meanings.
Leaves a Marx
Well, in order to get this joke, you need a certain level of familiarity with the original commy, Karl Marx. But you also just kind of need to know what's the name of those bamboo chairs you always find by the pool.
So, we'd say you're probably halfway there, but just to complete the other half: sociologist no. 1 was referring to reading Marx, the philosopher; while sociologist no. 2 was referring to having red marks, as in, what you get after sitting in a wicker chair for too long.
Laughing in Reverse
Okay, as "Back to the Future" fanatics we absolutely fell in love with this joke, and we're not joking. So, you know how, when it comes to time travel, events tend to lose their initial chronological structure? Well, that's exactly what happens in this joke.
The punchline comes first! Now, our only (very minor) issue with this is – isn't it the time traveler who's supposed to know what's about to happen before it actually happens? Because here, it seems like the bartender is the one to predict the future.
Normally, to get this joke, you'd need a B.A. in Film Studies. But we're here to help you bypass all the extra time and brain real-estate spent on classes and exams. So, Sociology of Film 101, take notes: There's been a lot of criticism from sociologists over the years about female characters never talking about anything other than men, which resulted in the emergence of the Bechdel test.
If in an all-female scene, the conversation revolves around anything other than guys, it means it has passed the Bechdel test successfully. Okay, now you're allowed to re-read the joke.
So Long, and Thanks for the Fish
Here's a smart joke for the artsy people! Just so you won't say that we're being discriminative of the arts here. So, we all know the light bulb screwing genre of jokes, and honestly, we're not really sure if anyone finds those funny anymore.
But this surrealist take on the worn-out versions is bound to get you smiling at the least. Well, once you get why it's actually funny, that is. So, you know how surrealism is all about pieces of art that don't really make sense to anyone? So, that's why we have a fish.