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

Like the FROG who's put
in a pot of water
The Big Bang Theory Season 7, Episode 16

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

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