
Happy kitty, SLEEPY kitty
The Big Bang Theory Season 1, Episode 11

♪ Sleepy kitty... No.
The Big Bang Theory Season 12, Episode 24

You know if you stay up all night,
you're going to be SLEEPY tomorrow.
The Big Bang Theory Season 6, Episode 22

Now, rise and shine,
SLEEPY head.
The Big Bang Theory Season 5, Episode 15

Sleepy kitty.
The Big Bang Theory Season 2, Episode 21