Having horns"In 1997, 4th and 5th grade Waterville Elementary students told me they saw Short-horned lizards (commonly known as Horny toads) all around their area." http://depts.washington.edu/natmap/projects/waterville/begin.html
(informal, vulgar) Sexually aroused.That girl makes me feel horny.
1949, Henry Miller, Sexus, Her thick, gurgling voice saying...: "Get it in all the way... please, please do... I’m horny."
1971, October, Ain’t that the horny bitch that was grindin with the blind dude.