When a sexual partner sticks your own finger(s) in your own asshole, against your will, during sex; generally occurs in the 'doggy style' position. Also known as Lonned and Lonning.
"We we're getting it on in the car last night when he flipped me over and gave me 'The Lon'."
by Nanzi October 12, 2013
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A Vietnamese term for Cunt, Vulva, Pussy, Snatch... Lon is used to describe just about anything and everything in Viet Nam.
Mofo is a dickhead = Thanng mat Lon
Bitch is a skank = Con Lon diem
Food is terrible = Do An nhu Lon
What a beautiful scenery = Xinh nhu Lon
.................
by KeMeCaSi March 26, 2015
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Abreviation for Loser On Net
Wanna hang out? Or are you gonna be a LON?
by allan January 22, 2004
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Short for "pylon"...where a pylon is a person who just stands around silent and stationary, like an actual pylon.

Can also refer to someone uninteresting or boring.
Some party that was...everyone was just standing around like lons so I left...
by PYLON JOHNSON December 5, 2013
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A way to pronounce the natural log which is actually spelled Ln.
The integral of 1/x is "Lon" of x. (Ln x)
by Zip Code Ness March 5, 2008
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A superlative suffix of an adverb, meaning "very".
Q: Do you want to get drunk tonight?
A: Totallon!

Q: He's hot. Is he gay?

A: Obviouslon.
by Grubtard December 4, 2009
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