Feign death - do you scream?

[Swish]

Curious to know...both my SK and necro (spell cast FD) on blue don't hit the deck with a howl of pain, but my monk on red is audible when he goes down.

Just wondered if that was a common feature, and if it's a bug, and if its something classic. I know other people hear the necro/SK make a death sound, I just hear the spell effect going off.