A guy who says he has a big penis, but there is no proof that it exists.
That guy must be a nessie, he claims to have a big one, but he can't get a girl.
by kir3d May 4, 2010
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Having sex with the same gender, because they look like your friend.
Boy that could have gotten real Nessy back there.
by Doomos October 8, 2005
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I thought I was in heaven, but I was really just looking at Nessy
by Vitaly June 16, 2003
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Nessi is the cutest nickname for Vanessa on this entire planet. Is actually just as awesome as a Vanessa, but a little bit kinkier and more depressed. The only thing she reads are gay fanfics with a lot of smut. She is extremely sensitive, so watch your mouth! She is the perfect combination of cute and hot af. A lot of guys want her, but she only wants that one person. Literally the most supportive friend you'll have and also the chillest roomate. If you have a Nessi in your life, show her a lot of love and affection and let her know that she is a very important human being, that lights up your world. (because that's what she is)
Friend: Yo, my crush wants to vape with me but 'm not sure.....
Nessi: DO IT OMG I SHIP IT SO HARD GO FOR IT YAAAAAAS GIRL GET THAT DICK
by coolassfriend January 7, 2019
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Renesmee Carlie Cullen's nickname, given to her by Jacob Black because he considers her full name to be a mouthful, though Bella strongly dislikes him nick-naming her child "after the Loch Ness Monster". However all of the characters adopt this shortened version.

*spoiler* Also "Vanessa Wolfe" is actually Nessie. In Breaking Dawn Bella is worried about a possible Volturi attack, so she gets Fake Id's for Jacob and Nessie calling them Jacob And Vanessa Wolfe, since Bella assumed that that was a name that "Nessie" could be short for *spoiler*
Grandpa Charlie: “See you tomorrow, Nessie.”
Bella: “Not you, too! Huh? Her name is Renesmee. Like Renée and Esme, put together. No variations.”
by twifangirl21 April 27, 2009
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Is having a large long turd that the end sticks up out of the water resembling the Loch Ness Monster.
I just took a nice Nessy.
by sfrydaddy7 January 30, 2010
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a. A serpent-like monster rumored to be living in Loch Ness.

b. Rumored to be the child of Bella and Edward Cullen. Her real name is Reneesme, which comes from combining the names of Bella and Edwards moms, Renee and Esme. It takes Nessie only 6 years to be fully grown, and since she's extra speshul, she even glows like radioactive waste. It is also rumored that werewolf Jacob imprints on her. Her existence is accepted among many, but is still unproven.
a. Oh my God, I just saw Nessie poke her head out of the loch!

b. A few days before the release of Breaking Dawn, rumors of Bella and Edward's child Nessie leaked onto the internet, causing weeping and gnashing of teeth as people denied it. The main argument for this being fake was that it was impossible for vampires to have children. Others claimed it was ridiculous. Either way, it brought many lulz.
by Vikizao August 2, 2008
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