Two guys wanted to get out of the mental institution because they believe their illness is gone.

Knowing that there are guards in the main door, they decided to go to the rooftop.

Guy1 : How do we get out of here? The next building is far from where we are standing.

Guy2 : Don't worry, I have a flashlight. (Puts on the flashlight and directs it to the next building). You see this light, you just step over here and slowly walk towards the next building.

Guy1 (angry) : What do you think of me? A fool? No, I will not walk over the light coz if you put it off, I might fall to the ground.