Yes.....yes....your anguish sustains me.
That would be a reference to Family Guy, Season 4, Episode 4, "Don't Make Me Over".
Stewie: Oh there there, let me dry those tears. [licks his fingers with Meg's tears on them] Oh, oh yes yes, your anguish sustains me.
For those of you who aren't fans, Meg, in a fit of teenage angst, whines how unpopular she is and how awful her life is, so Lois takes her to the mall and gets her a makeover. Her new looks go to her head, she turns into a spoiled brat, and she ends up being humiliated by being taped having sex with Jimmy Fallon for the opening sketch of "Saturday Night Live".
On a meta level, a perfect summary of the behavior of the gay and lesbian community that I skewer.
Which is an added bonus, because I just happened to like the quote.