Little ball of FUR
The Big Bang Theory Season 4, Episode 2
♪ Soft kitty, warm kitty,
little ball of FUR... ♪
The Big Bang Theory Season 5, Episode 6
♪ Little ball of FUR...
The Big Bang Theory Season 12, Episode 19
♪ Little ball of FUR... ♪
The Big Bang Theory Season 5, Episode 6