Top Definition
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
by theone1103 August 06, 2012

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
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?
by ClaraFloraKavy March 20, 2011

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
A command issued toward a potential administrator/administratrix of fellatio.
On the horn, bitch!
by Jeff O. January 18, 2003

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug