You're nothing but an unstable short-chain molecule!
5 seconds sound clip from the Ghostbusters II movie soundboard.
You can hear this line at 00:39:28 in the Blu-ray version of the movie.
Quote context
[...]
- You! You worthless piece of slime!
- You ignorant, disgusting blob.
- You're nothing but an unstable short-chain molecule!
- You have a weak electrochemical bond!
- I have seen some disgusting crud in my time, but you take the cake. You're a... You're just... Hey.
- This is what you do with your spare time?
[...]