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15.
noun. A Lenny is a fake or imaginary person. Usually someone's imaginary boyfriend who doesn't really exist.
She's so lying. Her boyfriend is just a Lenny.

She's just blabbing about some Lenny of hers.
by Rev.StrychnineTwitch July 04, 2011
 
16.
A term used as a nickname for a lesbian. Used in reference to the baseball player Lenny Dykstra. Mainly because his last name is Dykstra which sounds like Dike.. Term is often used on the sly.
Nathan: "So whats up with those Lennys over there?"
Kevin: "Actually, I saw one of them with a man last week."
by Nate.0 April 22, 2010
 
17.
A white guy on the simpsons.
White guys have names like Lenny.
by Anonymous July 19, 2003
 
18.
Used to describe a person who's face looks like an animal in some way.
- Dude, that girl looks like a duck!
-She's a lenny.
by Moscow... April 06, 2011
 
19.
Lenny is a kid from Baku, Azerbaijan. He traveled as a refugee to America. All the ladies love him, and men want to be him. When he grows up he is going to be a Billionair, and probably own you. So be jelouse.
Yo, DWAG, i love lenny. I wish i was lenny.
by ruskii911 December 03, 2005
 
20.
The viscous, detestable discharge that signals the end of a woman's menstruation cycle. Also tends to be a fair-weather Pittsburgh fan. See also: douche sandwich.
1.) Aw, disgusting! That girl just left some Lenny on the toilet seat.

2.) Lenny, where is all your Pirates gear?
by Mr. Tibet April 29, 2010
 
21.
when a man has a nut that is abnormally smaller than the other
dude, the left one is such a lenny
by tinycaligal March 26, 2008