<human>: I noticed that the T of TIFU doesn't really apply, so here goes:

This was back in the late 80s when all the Seattle bands we all know and love were all playing tiny venues. I had no idea what any of these guys looked like, I just knew that they sounded frikkin awesome!  One night I went to see Sound Garden open for Soul Asylum at a Belltown venue that must have held 100 people max, and that would have been one big mosh pit.  Could have been the Crocodile, but if so it was half the size of today's Crocodile.

Anyhow, it was LOUD. I was at the bar, trying to order beer, and the scruffy dude in front of me says to the bartender, "...mumblemumble free beer? mumblemumble..."  All I hear is "free beer?" and so I yell, "FREE BEER!!?? I WANT SOME!"  Bartender glares at both of us says, "NO FREE BEER!" and walks to the other end of the bar to serve someone who actually wants to pay for beer.

Scruffy dude in front of me turns around and gives me a look that would have withered *plastic* flowers, and storms off.  I think, "Wow, what was *his* problem?" and forget about it.  Until.

Until Soundgarden takes the stage.  Chris Cornell is being weird and using headphones as a microphone. I eventually look over at the lead guitarist, and hey, that guy looks familiar.  Oh shit.  It's the guy who was in front of me talking about the free beer.  I had fucked up his chance at getting a well-deserved free beer!  He must have said something like, "I heard you have free beer for band members playing tonight?"  I'm lucky he didn't kick my ass!

Kim, if for some reason you happen to read this, I'm sorry.  I'll happily buy you a growler of Chuck's Hop Shop's finest, or keep your pint glass filled for an entire evening at the next show you attend!

Can you summarize the given text in a few sentences?
<bot>: Didn't recognize Kim Thayil, heard him ask for free beer and tried to get some too.  Bartender gets pissed and tells both of us to get lost.