An old political one (inspired by the unsavoury food thread):
A French, a Polish and a Sowjet dog converse.
"If I bark I get a slice of sausage" the french dog says.
"What is sausage?" ask the Polish dog.
"Silly dog, don't you know sausage" intejects the Sowjet dog, "but what is barking?"
Astrophysics is hard. We'd love to look at distant objects, but there's always a lot of dust in the way. For decades, physicists have wondered why all that dust is there, but they've finally found out: it's because nature abhors a vacuum.
@Shallow-Blue A guy on a speed date with a woman
- Hello! I am James. Nice to meet you.
- Nice to meet you too!! I am Sue. What do you do for a living, James?
- I am an Astrophysicist.
- OMG!! That's so cool. I am a Gemini...