Humor raro en inglé

El lunes en el chat un amigo me paso un chiste (digno de humor raro) en inglé:
Q: How did the matematician count his cows?
A: With a cowculator!

Recien (preparando el post) encontré otro en la misma linea
Q: Why was the math book sad?
A: Because it had so many problems!

El mismo lunes a la tarde,en la clase de inglés, tuve un ejercicio del tipo "fill the blanks" en el mismo estilo (el último es genial y el ante último, es de corriente Marxista)

Have you noticed any chage in me?
no! why?
I've just swallowed some coins accidentally.

Some girls think i'm handsome and some girls think i'm horrible. What do you think, Mary?
A bit of both, pretty ugly.

You have to be rich to play golf.
Then why are there so many poor players?

I think we've just have a puncture.
How did happen?
There was a fork in the road.

Well son, how was your first day at the new school?
great! the teacher is going to give me a gift.
How do you know that?
well, when I arrived, she pointed to a chair in the corner and said, "sit over there for present".

Why did you park your car on the yellow lines?
Because the sings says 'FINE FOR PARKING'

I'm going to put in your prision cell for the night.
What's the charge, Officer?
Nothing, It's all part of the service.

Why did the two astronauts decide to leave the restaurant on the moon and return to one on Earth?
They said it had no atmosphere.