
but he was a genius,
PLAIN and simple.
Breaking Bad Season 4, Episode 5

I don't think PLAIN oatmeal
was the point of that story.
The Big Bang Theory Season 10, Episode 23

Plain old Howard Wolowitz
is the best guy I know.
The Big Bang Theory Season 6, Episode 5

Just PLAIN old Howard Wolowitz again.
The Big Bang Theory Season 6, Episode 5

I made your favorite oatmeal, PLAIN.
The Big Bang Theory Season 10, Episode 23