♪ Purr, PURR, PURR
The Big Bang Theory Season 12, Episode 19
Purr, PURR, PURR
The Big Bang Theory Season 2, Episode 21
Purr, PURR, PURR
The Big Bang Theory Season 6, Episode 22
Purr, PURR, PURR
The Big Bang Theory Season 4, Episode 2
Purr, PURR, PURR
The Big Bang Theory Season 6, Episode 22