You can't unload a truck full of marbles with a pitchfork.
Daughter: You told me to change the baby.
You can't unload a truck full of bowling balls with a pitchfork.
There is none. In both cases, if you don't have one, you unload by hand.
The babies of course, you can use a pitchfork!
Because they kept falling through his hands.
Because he lost his marbles.