Two blonde girls were working for
the city public works
department. One would dig a hole and the other would follow
behind her and fill the hole in. They worked up one side of
the street, then down the other, then moved on to the next
street, working furiously all day without rest, one girl
digging a hole, the other girl filling it in again.
An onlooker was amazed at their hard work, but couldn't
understand what they were doing. So he asked the hole
digger, 'I'm impressed by the effort you two are
putting in to your work, but I don't get it -- why do
you dig a hole, only to have your partner follow behind and
fill it up again?'
The hole digger wiped her brow and sighed, 'Well, I
suppose it probably looks odd because we're normally a
three-person team. But today the girl who plants the trees
called in sick.'