On barfing

Tara: Yeah, she might not get back to you on that until tomorrow because she has food poisoning. She had to stop talking to me because she had to go barf.
Coworker 3: Yeah, you know the fun part about barfing?
Tara: Nothing?
Coworker 3: That's right, there's nothing.
Tara: Except maybe the weight loss.
Coworker 3: [laughs] There is that.
Tara: You know, I threw up so much in Vancouver and didn't lose any weight at all? That's disappointing. You'd think I'd get something out of all of that effort.
Coworker 3: That's because you're not timing it right. You have to throw up after your meals. You concentrated your effort all into one block of time.
Tara: Oh right, the puke-yourself-thin model diet.
Coworker 3: The supermodel dessert. [inserts 2 fingers into throat]