Finally somebody realizes that the phone has been off the hook all this time, and at long last, the phone sex gag pays off! Or not… It depends if you find this strip funny, I guess.
Every once in a while, Dirtygirl exemplifies the OTHER kind of “dirty”. I find it amusing just how easily she is distracted from the crisis at hand, and willingly aroused by a total stranger.
I don’t know how Brian did that with his eyes in the last panel, but it’s a neat trick.