Pooth

A term popularized by That Toy Guy to describe when a Transformers toy has the ability to poke its head out while it's in its alternate mode, be it as a jokey toy thing or a thing they can do by design, such as with X-Brawn/Wildride from RiD 2001 and Scourge from G1.

Did you know that the Kingdom Tigatron toy can do a goofy pooth by having it poke its head out in his tiger mode?
Oh, shit! That IS kinda funny.