
...this mean little skull,
or Kermit the Frog.
The Big Bang Theory Season 3, Episode 3

Or you're the FROG who's
been kissed by a princess
The Big Bang Theory Season 7, Episode 16

Silly FROG. So funny.
The Big Bang Theory Season 6, Episode 19

...the one where the FROG has its tongue
stuck to the underside of an airplane.
The Big Bang Theory Season 6, Episode 19

- Kermit the Frog?
- You know:
The Big Bang Theory Season 3, Episode 3