♪ Happy KITTY, sleepy KITTY... ♪
The Big Bang Theory Season 5, Episode 6
Warm KITTY
The Big Bang Theory Season 2, Episode 21
(SINGING)
Soft KITTY, warm KITTY
The Big Bang Theory Season 4, Episode 2
♪ Soft KITTY...
The Big Bang Theory Season 12, Episode 23
(SINGING)
Soft KITTY, warm KITTY
The Big Bang Theory Season 6, Episode 22