I'll explain the violence later. Wait, this is a webcomic - one never has to explain violence in thems! Aw, heck, I will...
The restaurant that Damon has in mind is the inimitable Cafe Gruesome: http://cafegruesome.thecomicseries.com/comics/
Cast-iron stove door; what non-invincible, unequippped time traveler should have. And a good alias.
It's obvious to anyone with even a small amount of musical knowledge that they are fighting over the musical terms they used on each other yesterday.
Call it a culture clash! :D
But they still creep me out a bit! :D
@Robina - I wear one everyone. (Alias, eh...?)
@Brickvoid - Well, there's certainly the musical terms fight, though it's a tad aggressive. And you have no idea how creepy these can be...
They're beating each other up! Now they won't be any good at all for the stew, I don't want them anymore.
@Exile - It's called "free range tenderizing."