The feeling of the morning after the night before's in-toxications, after little or no sleep, in the company of your girl/boyfriends you begin to feel silly - laughing at everything, everyone and anything.
After laughing so hard and feeling exhausted you begin to feel all jelly like.
A cult-like follower of Anime, various metal artists, or nintendo culture who can often been identified by a panda hat or similar. A Panda Head is often mistaken for someone Peacocking.
The other day, I was outside the book store and a flock of Panda Heads kept annoying the shit out of me.