The Grade 1 concert is fast approaching and Johhny has still 
not decidied what he will do. Little Mary is going to do a piano 
solo, Timmy will recite a poem, but Johnny can't come up with 
anything. Finally, his frustrated teacher is releived when he tells 
her he has worked out his act. 

Come the night of the concert, all the proud parents fill the hall 
and watch as Mary, in her perettiest dress, tinkles the ivories to 
rapturous applause...

Then Timmy steps out in his best suit and recites his poems to 
the delight of the audience.

Finally, out comes Johhny, in check shirt, and denim overalls. 
He steps up to the microphone and says...

"Ladies and Gentlemen. My uncle owns a farm and every 
holiday I visit him there. Tonight, I would like to share with you 
my impression of some of the many sounds I hear on my 
unlce's farm. Here is the first....'JOHHNY!  GET OFF THAT 
FUCKING TRACTOR!'"