I don't think PLAIN oatmeal
was the point of that story.
The Big Bang Theory Season 10, Episode 23
Just this morning, PLAIN as day.
Breaking Bad Season 5, Episode 16
Plain old Howard Wolowitz
is the best guy I know.
The Big Bang Theory Season 6, Episode 5
but he was a genius,
PLAIN and simple.
Breaking Bad Season 4, Episode 5
Just PLAIN old Howard Wolowitz again.
The Big Bang Theory Season 6, Episode 5