When I was in college, a friend of mine won a radio contest and got tickets to an American Hi-Fi show at a crappy hole-in-the-wall local venue (that is now closed and condemned). I didn’t even know who they were, but I agreed to go because well, free concert.
Anyway, before AHF went on, a truly horrendous band was playing, so my friend and I went over the the merch table, and started talking to some of the guys. They told us they were also in a band and they were going on after the current band (I can’t even remember their name) was done. I told the one guy, kinda stocky but cute, “well I hope you’re better than these fools.” He laughed and said he hoped they were. We bought their sampler and got it signed, then went back to “enjoy” the show.
The guys we were talking to finally went on, and they were definitely the best band that evening, and we told them so afterward.
Fast forward a bit and that band, Fall Out Boy, is suddenly super huge, and I just smile because they were so nice and playing with really crappy bands and they made it :)