A grotesque performer or clown, buffoon.
A pose, often exaggerated, in anticipation of an action; for example, a brief squat before jumping
A caricature.
A ludicrous gesture or act; ridiculous behaviour; caper.
Playful, funny, absurd.
Grotesque, incongruous.
To perform (an action) as an antic; to mimic ridiculously.
To perform antics, to caper.
An operative person or thing.
Any of a class of behaviors that produce consequences by operating (i.e., acting) upon the environment.
That operates to produce an effect.