Red Herring #34
Red Herring #34Batteries not included.
The answer
The odd one out was Barbecue. The other five are all Each hides the name of a classic toy (Troll, Lego, Etch, Doll, Jacks).
Barbecue only teases "Barbie" but hides no toy, while Controller (Troll), Allegory (Lego), Ketchup (Etch), Dollar (Doll) and Flapjacks (Jacks) each bury a real one.