Luxmutarefacere syndrome

[robinbloke]

This uncommon compulsion is that which, when the subject enters a darkened room with a movement sensor in it for the light switch they feel compelled to strike some kind of dramatic and/or ridiculous pose, preferably facing a mirror, for when the light switches on.

Comments

[robinbloke.livejournal.com]

Either disco fever or posing, I'd say...