After completing a Grand Pearl Pooh-bah in Hexic for the xbox360 you then have sex with 50 girls in 2 minutes, only sticking your dick in 49 of them. On the 50th you cum on her face while yelling "Grand Pearl Pooh-bah bitch!". Similar to the Sassafrass method (see Sassafrass).
The only way that geek Peter will ever have sex is if he completes a Grand Pearl Pooh-bah.
by Grand Pooh-Bah October 17, 2006