Top Of The Post Dance. Posted by a rather giddy user at the top of a thread on a message board when a new page has been reached. Usually in an edited post.
Yay, second page! *TOTPD!*
Also known as m3h, it means "me", chatspeak, mostly used while Instant Messaging.
Me: Where r u goin' Satnight?
You: Teh movies, wanna come w/meh?