Top Definition
1. (Noun) A person who is possesed by a ghost or phoantom.
2. (Noun) A person who wears hippie clothes while riding on a unicycle in the middle of London.
3. (Adjective) To describe someone as an ungrateful idiot excuse of a person.
1. OMG! Your boyfriend is a PHANTOMINON!!!!!
2. The news just said there is a Phantominon near Big Ben!
3. Ugh. Your such a Phantominon.
by Flapdoodle1112 July 01, 2009
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