Digging

[Seafood]

A passer-by watched two men in a park. One was digging holes and the other was immediately filling them in again.

'Tell me', said the passer-by, 'What on earth are you doing?'

'Well', said the digger, 'Usually there are three of us. I dig, Joe plants the tree and Sean fills in the hole. Today Joe is away unwell, but that doesn't mean Sean and I have to take the day off, does it?'