Wiktionary
a. 1 (context idiomatic English) eager to begin; anxious to get going. 2 (context idiomatic English) Eager for sexual activity. alt. 1 (context idiomatic English) eager to begin; anxious to get going. 2 (context idiomatic English) Eager for sexual activity.
Wikipedia
Hot to Trot is a 1988 comedy film released by Warner Bros. It stars Bobcat Goldthwait as an investment broker, Dabney Coleman as the head of the company Bobcat works for and John Candy as the voice of a horse that helps Bobcat's character make smart decisions in investing. The original music score was composed by Danny Elfman. The film's tagline is: "When I talk, you're gonna laugh yourself hoarse."
Usage examples of "hot to trot".
What about getting some more highway patrol or loaners from all those sheriffs' departments who were so hot to trot yesterday?