Two mental patients decided to escape the hospital.
One says to the other:
“Check if the barbed wire is high, then we will go under, if it is low – over the top.”
After a while the other one returned.
“Well, what did you find?”
“Oh! Such a bad luck, I don’t know what to do – there is no wire!”

In the Nuthouse.
“Doc, could you, please, get rid of my neighbor here – he thinks he is a motorbike.”
“Ah! Too much noise?”
“No! … fumes!”