Brainley is still wearing the time machine hat. A whiteboard behind has the following text written on it - "Temporal Calibration", "Hypothesis: Power Fluctuation"

Dobbsey: Okay, so your hat needs calibrating. What powers the time drive, plutonium?

Brainley: Nope! Hamster.

The clock in the front of the hat swings out to reveal an inner compartment in the hat containing a hamster. The hamster leans out and waves.

Brainley: Based on the premise that time flies when you're having fun, the time drive uses a hamster's sense of fun to create a stable time vortex. Fun is introduced into the system in the form of cheese.

The text "Cheese" is now also scribbled on the whiteboard.

Dobbsey: So...your hat is powered by cheese.

Brainley: You know, it sounds much more impressive when I say it.