Bam Bam Jimmy Graham.
Cross the middle - Bam!
Back of the endzone - Bam!

I'm still waiting on him to dunk and then hang on the cross bar.
Who Dats are going to hoot!

He even has his own theme song

Golden Graham

"Cracker" As in Graham Cracker

I'm curious, what nicknames do Tony Gonzalez, Dallas Clark, Antonio Gates, Jermichael Finley, Jason Witten, Vernon Davis, Greg Olson and Kellen Winslow have?

Is there an NFL TE that has a nickname?

Gonzo?

Not really a nickname since just about everyone named Gonzalez is frequently called Gonzo.

but were the Saints fans we do these things..

I only TE I can remember with a nickname is Shannon Sharpe... which was horse face. Though, no one would dare call him that to his face.

If you think about it, players that came from the U never really had nicknames. I can't think of any prominent names out of the program in the NFL with a legitimate nickname. They typically go by their first and last time.

Jimmy Slam Graham

Basketball reference