♪ Sleepy kitty... No.
The Big Bang Theory Season 12, Episode 24
Now, rise and shine,
SLEEPY head.
The Big Bang Theory Season 5, Episode 15
Really? You'll risk getting SLEEPY...
The Big Bang Theory Season 4, Episode 6
Happy kitty, SLEEPY kitty
Purr, purr, purr
The Big Bang Theory Season 10, Episode 20
♪ Happy kitty, SLEEPY kitty
The Big Bang Theory Season 12, Episode 19