I'll check out my dad's Ole Miss annuals. He was there when they became the Rebels.
It seems like one of them (1938?) perhaps makes reference to it but I'm not certain.
ETA: From rebelgrove.com...
The exact origin of Hotty Toddy is not known and appears to be a cheer developed from the 1930s.
When I was a kid, I asked my dad about it because I would frequently hear him use the expression when he would be on the phone with one of his college friends. He said something like, "You wouldn't understand. It's just something we've been doing since my college days." He just kinda blew it off. I do know they used it as an expression of endearment toward one another and would frequently add "______go to hell!" During the 1970 Sugar Bowl, at one point he recited that thing and added, "...and Arkansas can go straight to hell!" Then he asked, "what's the matter? It kinda pissed me off.
This post was edited on 8/14 at 7:56 pm