A miserable dose of the shits, lasting several days, for which you wish you could bung your arse up to mop things up and stop you from making a mess.
Example: Sorry lads, I can't come out for some beer as I've got a pooriod and wouldn't be any fun to be with.
by Undergroover January 02, 2009
When a chick takes a shit and gets her period at the same time
Some chick had a pooriod in the bathroom.
by Pitsnoggler December 20, 2010