Says he really really needs a tool for something, buys the tool, then completes the job without using it.
Heh every man I've ever met has to go and get the correct tools first or they can't do it. They usually use them though 
Mine likes a practical house, which means everything has to be on display for easy access. Im the opposite with a home for everything. We wind each other up equally on that 
He can be negative at any given thing and instantly see the dark side, potential or obvious problems. I look at the positives and work on those.
Doesn't file paperwork, just logs it in his phone and leaves paperwork lying around rather than put it in his own designated drawer.
I think we're just opposites. Balances everything out in general. I'm sure he would have his own list.