Horn mad, used primarily in the mid-ulster area of ireland, refers to a person who is keen on engaging in any sexual acts with the opposite sex and is extremly promiscuous.
Mark: Whos that standing over there?

Dean: Thats anne, shes completly horn mad!
by yassitsme September 1, 2008
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an over horny person, only thinks about hookin up, sucking cock and bucking.
Dude that girl over there is Mad Horn
by Neezy aka noel January 22, 2009
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A typical feeling when Really drunk and excessively horny at the same time. In fact, if one is mad waste mad horn it usually causes the engagement in relations with slampigs that they usually wouldn't think about touching.
"Yo dan i heard u double teamed that slampig last weekend with gage."

"Yeah but i was mad waste mad horn so its no biggie."
by Treetrunks February 4, 2009
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