Robotrekker

Robotrekker is a portmanteau between "robot" and "Amtrekker".

Brett Rounsaville routinely has trouble with his headset's audio chipset which garbles his audio and changes his voice to more of a robot voice. When this happens, Brett becomes "Robotrekker" and needs a couple seconds to rejigger his connection.

In which episode did "Robotrekker" first happen? In which was the term first used?