Shorty's 37 -39

There once was a boy called Dennis,
who loved the game called tennis.
One day at a match, he tripped during a dash,
now he has to go to the dentist!

There once was a boy called Doyle,
who never changed his cars oil.
Being a nerd, he pulled up to the curb,
his car blew up and threw the coil!

There once was a boy called Rick,
who ate till he was full as a tick.
Someone knocked at the door, and he rolled across the floor,
now wasn't that a cool little trick?!