Jay Leno 

To give or to promise to give something then take it back later on.

You gave me that iPod and now you want a back? Your such a Jay Leno.

Jay Leno by Blanky Blankenstein January 24, 2010

jay leno 

A strap-on attached to the chin, used especially for penetration and party tricks. Similar to a screwnicorn, in which the strap-on is attached to the forehead. It is thus named because the wearer winds up with the ginormous chin, only slightly smaller than that of Jay Leno.

I tried sending a picture of my jay leno in to Late Night as a look-alike for Jay's chin, but they did not show it on air on NBC. That pissed me off.

jay leno by Kerry Gibbons November 7, 2005

Jay Leno 

a person who has large chin, annoying voice, bad humor, and gotten something he doesn't deserve...

what the hell ?!? i can't believe he got the promotion ! what a jay leno

Jay Leno by tekken_5 April 16, 2006

Jay Leno 

One funny ass White Guy who has owned late night comedy forever

Jay Leno always has the best celebrities on his show

Jay Leno by Knows A lot September 8, 2004

Jay Leno 

slang term for an enormous chin, obviously due to Jay Leno owning a chin of this proportion.

Johnny Depp: That bitch has a Jay Leno.

John Madden: Yep, shit looks like a beehive.

Jay Leno by DertyDrew September 6, 2006

Jay Leno 

An extremely large chin, usually found on an otherwise attractive person.

"Dude, I was walking down the street yesterday right behind this girl with a smoking hot body, but once I caught up to her I realized she had a freakin' Jay Leno!"

Jay Leno by Nat Light Nick April 28, 2007

Jay Leno 

Jay Leno is renowned for providing background noise for elderly on nursing homes. His barely understandable speech and crappy jokes help the geriatrics sleep better.

Jay Leno: "Do you like the March Madness? Here's how it works: First you start out with 65, and then one by one, people are sent home until there's only one left, no, I'm sorry, that's our coalition in Iraq."
Elderly: zzzzzzzzz

Jay Leno by The Wall Street Dangler January 5, 2011