Term used to reference one that is amidst mentalconfusion, confused or is known to make frequent non-sensical statements.
The user claimed that his computer was Windows Vista when he left, and Windows XP when he returned. He was on the wrong computer, he had a bad case of Trelstad.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.