Hey Gramps...

Jetfire: *is thinkin' of ways to brutally murder Michael Bay as well as beat the living hell out of the two bots on either side of him*

If you don't get, then watch Revenge of the Fallen or see one of the previews of it that contain an old bot with a cane.

EDIT

I would like people to know that I DID actually like old Jetfire in the movie. He was one of my favorite characters. But after having watched TFA season three with a young Jetfire, I still found it funny that they made him ancient in the movie. I'm sure the Jetstorm and Bee did as well. I'm not hatin' on any Jetfires here, just making a joke.