![♪ Happy kitty, sleepy kitty
♪ Happy kitty, sleepy kitty](https://content2.mcqstudy.com/ss/tbbt-12-19-00:18:09.479.jpeg)
♪ Happy KITTY, sleepy KITTY
The Big Bang Theory Season 12, Episode 19
![♪ Soft kitty, warm kitty,
little ball of fur... ♪
♪ Soft kitty, warm kitty,
little ball of fur... ♪](https://content2.mcqstudy.com/ss/tbbt-5-6-00:21:01.950.jpeg)
♪ Soft KITTY, warm KITTY,
little ball of fur... ♪
The Big Bang Theory Season 5, Episode 6
![(SINGING) Soft kitty, warm kitty
Little ball of fur
(SINGING) Soft kitty, warm kitty
Little ball of fur](https://content2.mcqstudy.com/ss/tbbt-10-20-00:17:53.448.jpeg)
(SINGING) Soft KITTY, warm KITTY
Little ball of fur
The Big Bang Theory Season 10, Episode 20
![Soft kitty
Soft kitty](https://content2.mcqstudy.com/ss/tbbt-2-21-00:20:06.787.jpeg)
Soft KITTY
The Big Bang Theory Season 2, Episode 21
![Soft kitty, warm kitty
Soft kitty, warm kitty](https://content2.mcqstudy.com/ss/tbbt-3-1-00:08:46.523.jpeg)
Soft KITTY, warm KITTY
The Big Bang Theory Season 3, Episode 1