Two blondes 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.”