According to the lyrics, they aren’t exclusively complaining, they’re telling “good stories” about their not-so-great experience which is a different thing. Also, they never tried to be a ‘good guest’ at parties, merely that they were found to be ‘interesting at parties’ because of their ‘good stories’.
That said, I really wish they didn’t repeat lyrics so much and instead told more of those “good stories” they keep boasting about.
Also had a great sense of relief when mine was taken out. That wonderful absence of that particular pain was exquisite! There was other pains instead, but those pains had things that improved their symptoms while the gallbladder pain was otherwise untouchable by meds. My gallbladder had 3% working rate before it was removed.