When someone give the expression of being macho and grandiose. But when the time comes to deliver, they under fulfil and you are left severely disappointed.
Friend A: Did you see Dave last night at the party? He was on fire!
Friend B: ohh I was with him last week, hes nice to talk to but once you get to know him you will see he's just small dick confidence.
Friend B: ohh I was with him last week, hes nice to talk to but once you get to know him you will see he's just small dick confidence.
by Maverick601 August 25, 2018

With Confidence (aka withcon) is the fabulous Aussie band that embodies legit every aspect of "pop punk" with members Jayden Seeley, Inigo Del Carmen, Luke Rockets, and Josh Brozzesi. Signed to Hopeless Records with their first full length album "Better Weather" (2016) and a crap ton of EPs. WC has supported many bands on tour along with 2 of their own headlining tours. It helps that they're all sexy as hell. Just watch the band grow up with the greatest music as the greatest sex gods of our generation.
person1: "fam, any good new bands?"
person2: "check with confidence out!"
person1: "this is my shit... mate"
person2: "check with confidence out!"
person1: "this is my shit... mate"
by xXforXironyXx November 24, 2016

Playing Confidence man is when a guy willing dates or acts interested in a woman to raise her self esteem
by Mrpayday February 21, 2017

When you get online and you start talking trash whenever your too much of a puss to say it in real life.
Dave: Did you hear what John said to Brittany in that text message?
Kit: Yeah, he's got a serious case of cyber confidence.
Kit: Yeah, he's got a serious case of cyber confidence.
by Aqua785 March 29, 2009

by Hym Iam November 9, 2023

by ApolloX*12 August 20, 2024

When someone, through some means (usually weight loss), gains a large and sudden boost to their confidence that turns them into egotistical dickheads. It can also exacerbate egos for people who were faking it and now that they have real confidence it makes them appear like they're bragging all the time.
Fella: Hey, did you see that Gary lost a ton of weight recently?
Mate: Yeah! Notice how he hates fat people now? And he scoffs at chicks that he previously would have crawled dick first through a valley of glass just for them to notice him?
Fella: I have!
Mate: Ya boy's got a bad case of Sudden Onset Confidence Syndrome.
Mate: Yeah! Notice how he hates fat people now? And he scoffs at chicks that he previously would have crawled dick first through a valley of glass just for them to notice him?
Fella: I have!
Mate: Ya boy's got a bad case of Sudden Onset Confidence Syndrome.
by RussNuts July 16, 2019
