A teacher was explaining biology to her first grade students.   "Human
beings are the only animals that stutter", she said.
 
A little girl raised her hand.  "I had a kitty-cat who stuttered", she
volunteered.
The teacher, knowing how precious some of these stories could become, asked
the girl to describe the incident.
 
"Well", she began, "I was in the back yard with my kitty and the
Rottweiler that lives next door got a running start and before we knew it,
he jumped over the fence into our yard!"
 
"That must've been scary", said the teacher.
 
"It sure was", said the little girl. "My kitty raised his back, and
went 'Fffff, Fffff, Fffff'... And before he could say "Fuck off", the
Rottweiler ate him!"