Get on the horn slang dated
To use the telephone to talk (to someone).
My mom got on the horn to the teacher to ask about my academic transcript.
John got on the horn to the bank teller to complain that he couldn't send money with the mobile banking app.
To feel or show strong sexual desire, particularly of a man; to have an erection.
He told me that just seeing a pic of his crush could make him get on the horn.
He got on the horn when looking at a photograph showing a naked woman.
The verb "get" must be conjugated according to its tense.
The origin of this slang is not clear.