Vivien: No I never got a chance to tell you. Its Vivien Harmon.
Constance: (uninterested) Oh, hmm.
Chad's friend telling him to "spice things up" with Patrick and the scene cutting to his shocked and pained expression as he's looking at some of the BDSM-related product. In fact, that whole scene is funny because he has absolutely no idea what he's doing.
Ben screaming at Vivian about Moira, bringing up how this luscious, hot redhead is "always flaunting herself" at him. Since Vivian sees Moira as an elderly woman in her 50s, she just answers with a blank look.
Most if not all the dialogue between Hayden and Travis is more than a little comical given that Hayden for all her craziness is a former psychology student, and evidently a very good one and Travis is, well Travis. The scene where the two first hook up is worth a mention.
Just the fact that even Travis isn't thatstupid is quite funny.
Hayden asking Travis if she can get a hug before stabbing him to death is reminiscient enough of Melvin to be funny.
And just later, the ghost of Hayden lamenting being stuck with Travis' dead body, the ghost Travis appearing to lament that he's never going to be famous, the ghost of the Black Dahlia appearing to suggest that may not be the case, and the ghost of Charles Montgomery appearing to offer help. It's just this hilarious thing of the ghosts each showing up in turn to offer their input like some surreal brainstorming session.
The way they solve both problems by letting Charles recreate the Black Dahlia with Travis's body.
Hayden is the master of this. It is revealed that Hayden sometimes has sex with Constance's ex-husband, Hugo, and then fake murders him in order to take out her revenge fantasies on him. He however, being a ghost, bleeds, but then snaps right back seemingly without pain and goes to the kitchen to eat something. Its funny just to watch him getting up, like nothing happened.