Questionable Content comic for 10/30 -- explain the joke?

Okay, here’s a link to the comic in question:

http://www.questionablecontent.net/view.php?comic=1525

I HATE admitting it when I don’t get a punchline, but the joke of the t-shirt in the last panel is eluding me and I just want to know so I can get on with my day. Will someone put me out of my misery, please?

TVTropes to the rescue!

A girl who is both violent and affectionate, in turns.

Tsundere moment. If there’s a deeper meaning, it eludes me.

Don’t feel bad–I had to google it, too…

It’s a nudge at the fourth wall. Tsundere, as the TVTropes page points out, is a big trope in anime, especially romcoms, and the shirt is pointing out that Faye occupies that role in the Questionable Content cast.

Don’t feel bad- Jeph tweeted this morning in surprise at finding out that Tsundere was the top Googled term after he posted the strip.

I don’t know why but this made me giggle for 5 minutes straight. Not the idea, just the phrase “Jeph tweeted this morning in surprise” is just hilarious and brings up all kinds of odd pictures.