Shopping with Woof and Sqrl

Woof: "...hmm. Ice cream. Peanut butter with chocolate. Okay."
Sqrl: "Hey. Peanut butter chocolate topping sauce, too."
Woof: "I think topping chocolate/peanut butter ice cream with chocolate/peanut butter sauce may be overkill."
Sqrl: *blank stare*
Woof: "You don't think so?"
Sqrl: "I don't know what 'overkill' means."
Woof: *long silence* *adds topping and ice cream to cart* *moves along*