A rich couple advertised for help to paint a porch.

They chose a girl they interviewed to paint the porch for $75.

The husband asked the girl how long did she think it would take. She said
one day. Looking at the 30 gallons of paint they purchased, the wife asked
the husband if the girl knew the porch wrapped around the entire house. The
husband said he didn't think so, but wouldn't pay her if she didn't.

The girl started the next day, within 4 hours she knocked on the door and
said she was done. The husband said "already"? She replied "yes, and since
one coat didn't cover very well, I painted it a second coat". She said "
and by the way, that isn't a Porsche, that's a Ferrari".