Adjective
firstest
(nonstandard) very first.
Now often recast as "Getting there firstest with the mostest", citation this misquote first appeared in print in a New York Tribune article written to provide colorful comments in reaction to European interest in Civil War generals. Source: Internet
The song "Horse Soldier, Horse Soldier" from the 2007 album of the same name by Corb Lund and the Hurtin' Albertans references Forrest: "I's the firstest with the mostest when I fought for Bedford Forrest." Source: Internet