Because I'd kill my rabbi with a pork chop
to be with your SISTER.
The Big Bang Theory Season 1, Episode 15
This same mob
spat at my SISTER not long ago.
Game of Thrones Season 7, Episode 3
You're the one
impersonating her SISTER.
Game of Thrones Season 7, Episode 4
What about your mother and SISTER?
Game of Thrones Season 6, Episode 6
Penny, this is Sheldon's twin SISTER.
Missy, this is our neighbor Penny.
The Big Bang Theory Season 1, Episode 15