Girl: Aloha! Would you like a free sample?
Homer: The price is right! [stuffs them furiously into his mouth]
Mmm.. Ooh.. Macamadamia nuts.
Girl: If you'd like to buy some, they're only a dollar each.
Homer: Oh, so <that's> your little plan. Get us addicted, then jack
up the price! [as he talks, cookie crumbs splatter out of his
mouth, dirtying up his shirt] ... [meekly] Well, you win.
-- at the Cookie Collossus store, "Bart's Dog Gets an F"