Immediately, it reminded me of Shaun "Deep Freeze" Smith -- the nickname of course is a nod to William "The Refrigerator" Perry.
So after seeing Raji line up at fullback (and not even counting his interception return for a touchdown) he earned a similar nickname to Smith -- "The Freezer". Well, really, he gave it to himself.
"I was miked up for the Atlanta game, and one of the trainers came to me and said, 'You look like The Fridge out there,'" Raji said. "And I was just playing around, 'I'm the Freezer.' I was making a joke, just making light of the situation and having a good time with it. So I guess, in retrospect, I came up with the name."
Raji is 337 pounds while Smith is listed at just (just?) 325 pounds. Smith has some competition for big man running back of the year.
Of course, all this is operating under the assumption Smith is a Chief in 2011 which is no guarantee considering he is not under contract next year.