How about that Alka-Seltzer commercial where a foil packet falls out of the guy’s wallet at dinner, onto the table, and his date demands to know,
“What kind of girl do you think I am?!”
and then she sees that it’s just antacids and they both laugh.
I kept expecting him to reply, “The kind of girl who has pulled a few `boners’ herself?”
Raised eyebrows all around.
(`Gee, I dunno `bout that last line Bob—kinda rough—but let’s run it up the ol’ flagpole and see if it gets a salute from the standards dept.’ Both ad execs laugh.)
I think we're to believe that she has already seen that it's Alka Seltzer when she says that. The joke is that he thinks she's the kind of girl that would eat big and need the product; after the viewer has already reached another conclusion about what the package he dropped is.