Urban Dictionary: on the horn

2.	on the horn
	A command issued toward a potential administrator/administratrix of fellatio. On the horn, bitch! buy on the horn mugs & shirts by Jeff O. Jan 18, 2003 add a video
1.	On the horn
	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 buy on the horn mugs & shirts phone blower cell phone telephone make a call phone call by theone1103 Aug 6, 2012 add a video
3.	on the horn
	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? buy on the horn mugs & shirts on the horn on the horn horny by ClaraFloraKavy Mar 20, 2011 add a video