Definition of an erect penis. Used widely in the 80's usually in school playgrounds.
I always get a lobon in the morning...
by Eggman July 26, 2004
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a semi lobon can be gained by lookin at something arousing like a dead badger or your mates mum. the resultin is a half erect penis which can be used to beat gypsies or perform wang shapes with
scuba steve gained a semi-lobon then beat a girl unconcious with it
by haimes March 31, 2008
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