Someone that breaks into your house to do a poo.
Usually performed by a desperate friend, or someone lacking the common sense and social etiquette to find a public restroom.
Man, I came home and my front door wasn't locked like I left it. Nothing was stolen but there was this big shite floating in my toilet. I hate it when inturders don't flush. I don't think they wiped either. Dirty, dirty inturder!