You're being SELFISH right now
The Big Bang Theory Season 12, Episode 5
Because you were being SELFISH.
The Big Bang Theory Season 10, Episode 10
No matter how thoughtless
and SELFISH he is,
The Big Bang Theory Season 12, Episode 23
Sheldon, you can't be SELFISH.
The Big Bang Theory Season 1, Episode 14
How is that SELFISH?
The Big Bang Theory Season 12, Episode 20