Aha! 

Shout this if you've won something or done something cool. Often used by Alan Partridge.

Alan, you've won the new casual sportswear jacket.

Reply: AHA!

Aha! by Clareol July 17, 2003

Aha! 

Short for mathematical enlightenment. That breakthrough thinking moment or insight you experience after trying to solve a seemingly unsolvable math problem.

Solving mathematical quickies is an inexpensive way to activating the oft-atrophied right part of the brain, which would increase the chances of experiencing an aha!—when thinking laterally or even paradoxically often acts as a catalyst to finding the solution to an apparently wicked problem.

Aha! by MathPlus April 22, 2021

aha! 

A gay user who enjoys circle jerks and gay sex with gay black men.

aha! has a shitty username

aha! by shoooter February 13, 2005

Aha 

A common phrase used in text messages When you don't really know how to reply and don't really want to communicating in the first place

Person 1: hey! It's been a while how are you?
Person 2: not bad aha, u?

Aha by Theurbandictionar January 11, 2020

Aha 

Another word for saying, Yea-rite!

My penis is big, Aha!

Aha by Con December 14, 2003

Aha 

That reply that girls reply with after you've just wrote a whole essay

Me: *writes massive essay*
Her: Aha

Aha by 19lydlar May 5, 2020

aha 

Meaning 1:
A word used to reply to a funny message sent by someone that you're thirsting after. It is the ideal response if you want to seem cool and confident, because simply saying "haha" is plain and can come across as overly keen, whereas no laughter at all just makes you sound like a sociopath.

Meaning 2:
A nervous laugh. Basically used to tell the person they're weird in a nice way.

Sophia: Do not remember doing this lol but 👋 to you
Sabrine: Aha thanks, nothing better than an unintentional wave

aha by soybean23 July 1, 2017