No, I think it's stupid.
Aha!
The Big Bang Theory Season 7, Episode 16
Aha.
The Big Bang Theory Season 1, Episode 12
answer the door or should I
open it and say "AHA" again?
The Big Bang Theory Season 7, Episode 2
Aha!
The Big Bang Theory Season 7, Episode 3
Aha!
The Big Bang Theory Season 6, Episode 3