Ok - This was about 15 years ago with the 1st edition of WEG's Star Wars. I was playing a smuggler (Player #1), my friend was playing a wookie (Player #2), we had a bounty hunter(Player #3) and one other character (Player #4) in the party. It is either really late in the night, or very early in the morning, depending on your preference. The group is in an imperial installation and we are in a multi-level shaft. The bounty hunter has just used his jet pack to reach the top level. The wookie is a few levels below him, the rest of us are waiting for the two of them to drop us a rope and help pull us up.
Alas, the imps have twigged to our presence in the installation. A squad of stormtroopers has just found us and is pinning us down with blaster fire while another squad starts setting up a repeating blaster. Things are looking bad, really bad.
The bounty hunter decides to fix the situation by popping out his Thermal Detonator and tossing it down to the level where the imps are. Player #3 rolls just well enough to drop it down next to the wookie.

Thinking quickly, the wookie decides to kick it off his platform. Heck, maybe it will still get near the imps. Player #2 rolls even worse. The wookie manages to step forward, kick up his leg and land on his butt. From below, all we can tell is that the bounty hunter just dropped a grenade or something on the wookie.
**BOOM**
Player #4 looks up at the GM and asks "Do we see feathers?"
A few moments of dead silence ensue as each of thinks "Did he just say what I thought he said?" Then, Player #2 starts laughing so hard he is holding his stomach and trying not to fall out of his chair. Between laughs and gasps for air, we can make out the garbled words of "Feathers? F*****' Feathers? Wookies don't have feathers!" In short order we were all laughing. I remember having to go to another room because I had to lay down on the floor to stop laughing. That was the end of that session.
Alas, I no longer game with any of those people. So, when something does obscene amounts of damage and I have that urge to ask if we see feathers, nobody has any idea what I am talking about.