By Billberry 
At school the teacher asks Pierino:
“Pierino, tell me the first three letters of the alphabet”.
Pierino answers:
“s, d, q”.
The teacher answers him:
“What are you talking about, Pierino! Go immediately to punishment behind the blackboard!”
From a window behind the blackboard Pierino sees that his bicycle is being stolen. So he runs to the teacher and shouts:
“Bike!!!”.
And the teacher:
“Good job, Pierino! You can go back to your seat