Guardian has an unusually good collection of broadly science-based jokes
- some even seem fairly new! There are many more in the pages of comments... A few samples:
A statistician is someone who tells you, when you've got your head in the fridge and your feet in the oven, that you're ? on average - very comfortable.
I have CDO, it's the exact same as OCD, except the letters are ordered alphabetically.
A computer programmer's wife sends him to the shops. "Get a loaf of bread. If they've got eggs, get a dozen" she says. He returns with 13 loaves of bread.