![snakes, possums, poison oak--
snakes, possums, poison oak--](https://content2.mcqstudy.com/ss/tbbt-9-20-00:02:39.828.jpeg)
snakes, possums, poison OAK--
The Big Bang Theory Season 9, Episode 20
![Holy crap, are you connected
to the Oak Ridge National Laboratory?
Holy crap, are you connected
to the Oak Ridge National Laboratory?](https://content2.mcqstudy.com/ss/tbbt-4-18-00:12:56.919.jpeg)
Holy crap, are you connected
to the Oak Ridge National Laboratory?
The Big Bang Theory Season 4, Episode 18
![Before you is a giant oak tree
with a face on it...
Before you is a giant oak tree
with a face on it...](https://content2.mcqstudy.com/ss/tbbt-6-23-00:03:25.005.jpeg)
Before you is a giant OAK tree
with a face on it...
The Big Bang Theory Season 6, Episode 23