Sleepy kitty.
The Big Bang Theory Season 12, Episode 24
Happy kitty, SLEEPY kitty
The Big Bang Theory Season 1, Episode 11
Really? You'll risk getting SLEEPY...
The Big Bang Theory Season 4, Episode 6
♪ Happy kitty, SLEEPY kitty
The Big Bang Theory Season 12, Episode 19
I'm very SLEEPY.
Money Heist Season 3, Episode 6