I had friends in high school, identical twin sisters. one would take the other's math/science tests, while the other took her English/History tests. Teachers never figured it out.

They also traded off on dates, unbeknownst to the guy. This was the test: if he couldn't tell he was out with the other twin, he was history.

Made for good slumber party talk.

oh, and peegee ---> nekkid nekkid nekkid