
But my true PURPOSE in being here
will be revealed...
The Big Bang Theory Season 3, Episode 15

He did that on PURPOSE!
The Big Bang Theory Season 5, Episode 17

he's not doing it
on PURPOSE.
The Big Bang Theory Season 7, Episode 7

Make us feel like we've got a PURPOSE.
Game of Thrones Season 2, Episode 6

Many of them on PURPOSE.
The Big Bang Theory Season 10, Episode 21