noun. A Lenny is a fake or imaginary person. Usually someone's imaginary boyfriend who doesn't really exist.
by Rev.StrychnineTwitch July 06, 2011

the act of very obsessed with Green Day. The result of having greendaymania is being a greendaymaniac. Somewhat like nirvanamania.
by Rev.StrychnineTwitch June 30, 2011
