It's amazing what you can do with a flying sofa. Well, mostly you can still sit on it, but in the air. It also presents the opportunity to go on a magical voyage of wondrous discovery to places you really shouldn't go. Indeed, exploiting a vertex or edge alignment bug in PlayStation Home, several users have taken their sofas on a flying trip and discovered a sly nod to Grand Theft Auto 3.
Sat on the end of a pier is a little stone nubbin carrying the message "You really shouldn't be able to read this." Remember GTA 3's hidden message on its 'inaccessible' wall? No? Well that one read, "You werent (sic) supposed to be able to get here you know".
Back to Home and also lurking up in a tower is a Warhawk mine, which seems a little dangerous and foolhardy to SPOnG. Fortunately, the sofa doesn't trigger it.
You can see video footage of it all below (plus a GTA reminder). You might want to turn the sound down for the first one, though.