A-ha!
The Big Bang Theory Season 9, Episode 13
answer the door or should I
open it and say "AHA" again?
The Big Bang Theory Season 7, Episode 2
Aha!
Game of Thrones Season 3, Episode 2
No, I think it's stupid.
Aha!
The Big Bang Theory Season 7, Episode 16
Aha!
The Big Bang Theory Season 7, Episode 3