Duckie or Tuesday??

I've started to plan my son's halloween costume.
Okay - I know that sounds crazy, but Martha Stewart I am NOT. And, for some reason I always feel the need to sew Matt's halloween costume.
Seriously. I bought a sewing machine when he was just a couple of months old, and the sole purpose for this purchase was in order to make him a halloween costume. I've made little else since. I've attempted pj's for Matt and Kyla (this was before Paige) but other than that it's halloween costumes.
So ...
Yet again halloween is on the horizon and I thought that I should probably start thinking about what Matt will be - since it will take me forever to make a costume (my time line includes several on the brink of tears phone calls to my sister, handing over some of the sewing to a friend and then getting my mom to finish all the difficult parts). I estimate abut 6 weeks.
So, today I explained halloween to Matt and asked him what he would like to dress up as for halloween.
He said "A duckie - quack - or Tuesday."
So I said "Tuesday?"
And he said "Not friday - Tuesday."
So, I repeated to him "you want to dress up like Tuesday?"
Yep.
So I pulled up a website of halloween costumes. I thought maybe he would be inspired by some pictures - maybe a dragon or maybe a pirate. He was intrigued by the elephant (way above my skill level), but still wants to go with the Tuesday costume.
I have no idea what exactly that means. He clearly has something in his head. I don't know what it is. So I think we will go and look at some patterns - try to figure out if there is, in fact, a costume that meets his expections of Tuesday.
Or maybe I will go with the duck.
Quack.