Its not a common thing that, because I've never heard of it. 

And besides that, I don't want the fourth wall broken... when there is no reason, nor design for it. [i]Deadpool[/i] is known for breaking the fourth wall, and I am more than happy to have his child do it as well, but just  not fixing up your  own mistake? 

Not just saying "Picked up the suitcase from where he/she/they/it had left it earlier" but instead writing that it had always been there in the way that it had been? there's standards in writing...