jackace

adj.
Someone who thinks that they are cool and/or smart but really isn't.

Or

Someone who is dumb,annoying or lame.

Example 1

Dude 1: Two plus two is four!

Dude 2: Wow, you are such a jackace!

Example 2

Guy 1: That was awesome! (After doing a stunt badly, not realizing it)

Guy 2: Shut up jackace! You did it all wrong!

Guy 1: No I didn't!

by Word Corrector September 18, 2009

JayjaChad

When your so smart that your brain can't be comprehended by other humans

Rawad is a JayjaChad

by BigBrain101 November 16, 2020

Jackack

A very incredibly hot and attractive person

Jackack is so cool

by cactus's simp May 14, 2021

janjacobus

Very shy but well known as a catholic priest. On thin ice when it comes to politics.

Live his life on edge cause he gets canceled twice a day.

Secretly has a ‘sea of thieves’ account, and hates people named Noah. Also a bad liar

Noah: “yo you wanna play sea of thieves?”

Janjacobus: “What is that you unclean cow”

by uncl3ansaintbruh November 22, 2021

jackjackmommy

jackjackmommy means that someone is sexy tall blonde

chloe thinks jackjackmommy is cute

by jackjackmommy July 27, 2022

JaJack

A social reject using YTP to hide his annoyingness: by being more annoying.

friend 1: JaJack is so cringe
friend 2: BUT HES HOT
friend 1: you're a jajack simp!
friend 2: can you blame me? HES HOT!
guy:shut the fuck up you swash

by Scyye (discord) September 15, 2022

Jawjack

When you stand up from a seated position and accidentally hit someone in the jaw with your head when you are trying to initiate physical contact

I saw my cute dancy drummer acquaintance Chris the other day, and when he stopped over to my table to say hello, awkwardly hugged his waist, realized it was awkward, stood up to be a gentlemen, and jawjacked him

by Ed Lobster February 21, 2026