fapchatのようなどんな単語でも探してください。
 
1.
On the phone; talking on the phone
A: She gave me her phone number two days ago
B: You had better get on the horn pretty quick if you want her to go out with you
theone1103によって 2012年08月06日(月)
 
2.
A command issued toward a potential administrator/administratrix of fellatio.
On the horn, bitch!
Jeff O.によって 2003年01月18日(土)
 
3.
when the male penis is erected, sometimes "on the horn" is used to explain an inappropriate erection
1. I was on the horn, but she didn't even notice. (sad face)

2. Oh lordy, is he on the horn?
ClaraFloraKavyによって 2011年03月20日(日)