A phrase written, or said softly or in a loud manner with a certain teasing nature, which can be used as an expression of joy, surprise, disappointment, fear, as a greeting, etc. It is also used as a filler phrase, or substitute in cases where the speaker does not know how to address a certain situation. This phase is most commonly used in online gaming as a kind of expression for an unexpected occurrence depending on it's novelty or manner of execution.
'Didi ah.' can be used in different situations.
In online MOBAs:
When someone missed a crucial skillshot you say "Didi ah!"
When someone chases you down and your teammate was able to protect you accordingly you say "Didi ah!"
When you meet that one person you always play games with you say "Didi ah!"
*Didi ah can also be used as a playful banter, i.e. when your teammate misses his skillshots you say "Didi ah!" With a hint of tease (must be said multiple times for a minimum couple of months before said 'hint of tease' manner can be excecuted in an acceptable manner.
In online MOBAs:
When someone missed a crucial skillshot you say "Didi ah!"
When someone chases you down and your teammate was able to protect you accordingly you say "Didi ah!"
When you meet that one person you always play games with you say "Didi ah!"
*Didi ah can also be used as a playful banter, i.e. when your teammate misses his skillshots you say "Didi ah!" With a hint of tease (must be said multiple times for a minimum couple of months before said 'hint of tease' manner can be excecuted in an acceptable manner.
by The Yellow Wookiee September 12, 2020
Get the Didi ah.mug. 
Get the Ahmug. Stop gacha heat!, a project made by Unsteady Week using Tynker. Learn to code and make your own app or game in minutes it's bad for the community and it's dying "Ah~" is something adults should not be ok with searching and no adult is gonna name their kid "Ah~" adults you need to check on your kids and make sure they are not searching inappropriate stuff and make sure they don't make gacha heat
by sahara the rainbow wolf May 8, 2022
Get the ah~mug. 
by A.I.R News January 9, 2022
Get the Ah, right on!mug. he like to wear no colour gucci shirt, he own thye ann goldsmith, and he like to su hong ki, he live by god, both of his son is kiao ku ong
by BRUNEISTALKER = GYM RAT April 9, 2023
Get the Ah Thyemug. 