(n.) 1. A domicile that is undersized, uncared for, and in a general state of disrepair unbecoming for human habitation (i.e. a drug den or a cheap slob's apartment). 2. An abandoned or condemned building.
1)
Man 1: "Did you hear Tony's out of the pokey and he's already back on the sauce?"
Man 2: "Yeah the bastard called me, but when I went to walk in and smelled the stench, I wasn't about to hang out at that step above a cardboard box."
Bum 2: (sarcastically) "Listen to Richie Rich over here. 'I'm so special. I'm living in a step above a cardboard box.' Oooh. Well I guess you're better than me now, aren't ya?"
"Wet cat in a cardboard box rizz" can be used to describe someone so pathetic and or innocent, that you feel the need to date them, out of pity, or sympathy. Like how if you see a cat abandoned in a box on the side of a rainy street, you feel compelled to pick them up, and take care of them.
"I met this girl the other day, she was so lonely, and stumbled over her words a lot, but I gave her my number, because she had wet cat in a cardboard box rizz."
A door wall is a sliding-glass door or patio door. The term is yet another example of banal Michigan vernacular, where in the residents latch on to company names, trademark names, marketing terms and product names from local companies. The terms become embedded in the local vocabulary and eventually become accepted as actual valid words and phrases. In this case the term comes from Wallside Windows in Taylor, MI (a large window manufacturer), where 'door wall' is their created word for sliding-glass door.
"Bob! John's gonna bring over them doorwalls from Wallsides on Tuesdee afternoon 'round two-thirty. Get 'er done!"