This tweet is actually a shortened version of a remarkably unfunny bit from last night’s episode. And I guess it was a callback to this 6.5 year old joke. The quote is below.
Colbert: But folks, nothing has me more confused than the transgenders. They’re everywhere, from Rupaul’s Drag Race, to Glee, to those Transformer’s movies.
Colbert: Hey, hey. Optimus, you were born a robot, it doesn’t matter if inside you feel like you’re a truck.
The Colbert Report, February 18, 2014
Disclaimer: Someone else originally posted this, but didn’t seem to like the unwanted attention it was drawing and deleted it. I could reblog it from someone else, but I think that would just add to the crap they’re getting. Sorry if this is the wrong way to go about it.