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1.
A malodourous or putrescent penis.
"I'm not putting that filthy stink horn in my mouth, go and wash it you dirty bastard!"
by Grot weasel the 2nd February 02, 2008
 
2.
When you having sexual intercourse in the anal area and she releases her bowels(Takes a shit all over) your dick and you let it dry. There are many words branching off this.
"Man dude I loved that stink horn last" said Bob " Dude that's gross...but cool." said his friend Tim
by NoTstinkhornCREATOR December 18, 2009