I know it's hard, but he's a gift
to the whole world, and we can't be SELFISH.
The Big Bang Theory Season 2, Episode 6
You're darn right it's fair play,
you SELFISH jerk!
The Big Bang Theory Season 9, Episode 23
You're being SELFISH right now
The Big Bang Theory Season 12, Episode 5
No matter how thoughtless
and SELFISH he is,
The Big Bang Theory Season 12, Episode 23
you did something
totally SELFISH without worrying
The Big Bang Theory Season 12, Episode 20