The one thing I do know is Joe is a chronic toupee wearer. Take a look below.
Here he is with a date in October 1997.

Here he is with Naomi Campbell in October, 1998.

Here he is in 2003 at the Hollywood Walk of Fame as Martin Scorsese receives his star.

Here he is with actress Joey House April 12, 2008.

Funny that his hairline changes in each picture. Funny how? Funny like a clown? Yes. And yes, you amuse us Joe Pesci.