A one-upper is someone who always has to be bigger and better than everyone else. If you say you are drunk, they exclaim with how much more they have drank than you.
Although Matt may seem mediocre, he is actually a one-upper; He must always top your story with one of his own.
by Drew Workman December 09, 2007
Someone who needs to be better than you because of there insecurities. No matter what you say about anything they will top it.
Say Alec the great tells a story about saving one little panda cub from a three alarm house fire. Dominguez the "one upper" will then tell a story about how he saved Panda's from dying from extinction.
by jordanski April 07, 2008
Someone who has apparently had everyone elses experiences happen to them, but much better or much worse. Often this is because they need to be better than others or feel the need to be 'one-up' from everybody else.
Sophie: I got totally drunk and ended up falling asleep on a bench!

Jess: Yeah that happened to me but I woke up in a lion's cage and proper fought it off with my judo style skills. All with a hangover too!

Sophie: You are such a one-upper!
by Gregor McGregorson September 07, 2009
Of or relating to a person always trying to outdo or claim that their experience was better without regard to whether it actually was better.
Torrey said that he had an excellent vacation in South Beach. Andrea then chimes in and says she had a better vacation in Iowa. This illustrates a one up and a one upper.
by JRoddd April 10, 2009
A person which when in conversation has a story to tell whether real or imagined, about a specific idea, person, place, event, or thing, that is more exhilarating, spontaneous, better, worse, shittier, greater, higher, lavish, outstanding, superior, superb, advanced, complex, sophisticated, splendid, wonderful, magnificent, improved, brilliant, admirable, excellent, terrific, marvelous, surprising, amazing, breathtaking, enhanced, thrilling, astonishing, fantastic, shocking, surprising, astounding, exciting, extraordinary, far-fetched, stimulating, electrifying, wonderful, stupendous, invigorating, or glorious then that of the previous story told. This person may also appear to be more cocky then confident, extremely egotistical, filled with jealousy, or a straight up hater. Also see hater JewJealous.
Danny McLOvin: Yo, I just bought a new Benz in cash by myself without even really working the shits hot.

Scottie McTalks: That shits only a C class, my dad has been working for 30 years, 13 hour days and has a S600, apartment in NYC, a house up in HillBilly land, and a few little doggies. Besides there are alot of little twits who have nice cars that mommy and daddy bought them.

Scottie McTalks is a one upper when he refers to his father having something better then McLovin, and the other little twits who have nice cars. Mctalks is also a hater when he displays jealousy and makes the statement that McLovin only has a c-class. One uppers are synonymous with haters in the fact that they hate other people because of their success and accomplishments and will attempt to ignore the fact that others are doing better then them.
Resentment is also a characteristic posessed by one uppers and haters, because of there lack of success and motivation they feel it is neccesary to put others achieveing more then them down.
Ex. 2
Mclovin: Yo, I just got a Kompressor benz all black, HID's, and 17' sport rims.
Baker: Thats a poor mans Benz I'm whippin a 87 Thunderbird with 126,000 miles on it.
by Dr. Mclovin January 08, 2008
-Regarding yourself as better than everyone else, with intent of seeming greater, without actually saying it.
-Implying you have done something long before anyone else even thought of doing it.
-Riding a motorcycle in scrubs and not getting any dirt on them.
-Working 18 different jobs including but not limited to a doctor, a mechanic, a veternarian, and astronaut before the age of 18 (With no proof)
Me: Man im stoked we are getting paid today its the 15th!
Hanson: Yeah well, i get paid 1 and a half hours before everyone else.
Everyone: ZOMG WTF!! How do you get paid 1.5 hours before everyone else, how is that even fucking possible?!!?!?!?!?
Me: Dude, your a fucking one upper.
Hanson: You are all just jealous!
by Smeew March 19, 2007
someone who always follows your story with a better one or has things that are waaaay nicer than yours and makes sure you know about it
me: Wanna see the car I just got? one upper: Sure! Yeah, it's nice and all, I'm going to get a Lexus when my boyfriend gets back.

one upper: Your husband's truck is really nice! My boyfriend will probably get one like this, probably newer though.
by ugh, can't believe this June 05, 2011
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