Rolling a 100-sided die

Behold: the DIE OF FATE!
I bought this d100 to use for percentage rolls in the weekly D&D campaign I host. It is slightly larger and heavier than a golf ball, and it cost about the same as a normal 7-piece set of RPG dice. As it turns out, you have to roll it VERY gently or it won't stop before it hits something...and once it starts to slow down, things just get weird.
And yes, that's the Castlevania II soundtrack playing at the wrong speed in the background, because I'm an idiot and forgot to set the turntable to 45 rpm.