Duocorn
A man dressed as a unicorn. (because a man already has one built in 'horn' and adding another, makes two=duo horns)
Look at that duocorn over there, he looks so hot in his unicorn outfit.
Duocorn
A word that @maamlikesbondage uses even though they don't know the definition and get awfully defensive about it.
"They're asking to meet a duocorn, but they won't say what it is because they don't know what the word means."