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

Happy kitty, SLEEPY kitty
Purr, purr, purr
The Big Bang Theory Season 10, Episode 20

And a SLEEPY Sheldon is a cranky Sheldon.
And a cranky Sheldon...
The Big Bang Theory Season 6, Episode 22

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

Happy kitty, SLEEPY...
The Big Bang Theory Season 4, Episode 2