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1.
a man who is especially horny and hits on all females
Jason is such a horn doggy!!
by Katrina, Jen, and Joanna November 28, 2004
 
2.
An intense state of wanting to do horndog related activities.
Sid stop being so horndoggy right now, get your hands off me! JK touch me all night long.
by dr. horndoggy, md October 10, 2010