Inside the Delirium that is Charades

Delirium is:

A state in which the thoughts, expressions, and actions are wild, irregular, and incoherent; mental aberration; a roving or wandering of the mind, — usually dependent on a fever or some other disease, and so distinguished from mania, or madness.

And I got it:

The game was Cranium. The charade target was “catnip.”