Because it would look ridiculous with 8 inches.
If it doesn't make you look smart, it's blunt.
Cleavage.
Six... three on the back and three in the trunk!
A dead poodle, split in half.
A STOOL Pigeon
Because in the animal kingdom 6 inches just wont do
Because they've been lied to about what 8 inches look like their whole lives.
Because they've been lied to all their lives about how long "8" inches is.