
When I finally managed
to convince her I was SICK...
The Big Bang Theory Season 1, Episode 11

Listen, Penny's SICK and she's not
gonna be able to go to Switzerland...
The Big Bang Theory Season 3, Episode 15

...and then there were the holidays,
and then he was SICK.
The Big Bang Theory Season 8, Episode 24

Sheldon, I accept your apology, but you
upset a lot of people while you were SICK.
The Big Bang Theory Season 9, Episode 13