n. when you take a dump that is so long that it sticks out of the water.
After eating that bowl of oatmeal, I feel like I could lay a nessie.
by shane November 30, 2004
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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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When a person is humpped by a dog. No penitration is neccessary.
Greg: yo my dog started to hump me yesterday when I was tring to grab something from under the table.
Ryan: you got nessied bitch
by C money $$$$ March 30, 2009
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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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