Brainley and Dobbsey are in the lab.

Brainley: I've had it! To heck with this!

Brainley: I'm building...a death ray!

Dobbsey: Professor, you built that last week.

Brainley: I'm building...a disco ray!

Narrator: One week later...

Brainley and Dobbsey are in the exact same positions but are now wearing ridiculous 70s hair. Brainley has huge curly hair and a giant mustache. Dobbsey has very long flat hair.

Brainley: I'm building...a donut ray!