...like gamma-aminobutyric ACID.
The Big Bang Theory Season 3, Episode 2
How could you for a moment think
that my favorite amino ACID is glutamine?
The Big Bang Theory Season 2, Episode 13
Your words fall like ACID rain
The Big Bang Theory Season 7, Episode 17
And zero-gravity
is giving me crazy ACID reflux.
The Big Bang Theory Season 6, Episode 3
...what did you put
for his favorite amino ACID?
The Big Bang Theory Season 2, Episode 13