A man leaves his house every morning to walk to work and passes a mental hospital surrounded by a wooden fence.Every morning the patients are out in the yard and he can hear them saying in unison,"10, 10, 10, 10, 10"
One day, he gets curious and looks through a hole in the fence.Suddenly, a stick shoots out and pokes him in the eye.
"FUCK!" He says to himself.
While walking away pissed off he can hear the patients saying,
"11, 11, 11, 11, 11"