Bi-directional Unified Transit Terminal


 * The Bi-Directional Unified Transit Terminal is an Isaac Sumdac invention in the Animated continuity family via Timelines fiction.

Isaac Sumdac invented his Bi-Directional Unified Transit Terminal (otherwise known as BUTT) as, basically, a space bridge for the Autobots to transport between Cybertron and Earth

Bee in the City
The Bi-Directional Unified Transit Terminal certainly got "to the bottom of [their] transportation problem", as Optimus Prime put it. Everyone, except for possibly Sumdac himself, became aware of the acronym and spent several minutes squeezing jokes into their conversation about it. Unfortunately, it malfunctioned and transported Sari, Bumblebee, and Prime to Axiom Nexus.