Here's a weird one:
Wandering around some random city. (I have a lot of dreams along this theme for some reason!) and the main drag is like a freakin' freeway. And although it's six lanes wide and a few miles long, one side of it is entirely taken up by just one truly MASSIVE building. Looks like some gaudy monstrosity halfway between a shopping mall and a casino, like 30 stories tall on the ends going up to about 60 in the middle. The building had to be like 10 square miles, per floor. Well, for the first 30 stories, anyway.
The freeway/street is on a sort of downhill slope, so to save some time, I grab what looks like a big plastic shopping cart, hop on it, and sorta ride it down the hill, somehow managing to steer it around various obstacles in the bike lane of this freeway. Eventually I come to what looks like a bridge. The street levels out, so the shopping cart thing becomes useless. Then two cop cars pull up behind me and the cops pile out.
At first I'm worried they're after me for riding around on the shopping cart thing like it was some kind of skateboard, but that's not it at all. They're yelling at me to get back behind them because there's a tiny hammerhead shark skating around on the pavement. I don't know WTF they're yelling about until it see it. It's about the size of a smallish housecat, and it's somehow "swimming" on the surface of the roadway. So I start heading toward the cops and now it's following me around, circling and such and trying to nip at my feet. So I start hovering along above the surface of the street, but it's physically tiring to do, and meanwhile the little fucker won't get out from underfoot.
The moral of the story is, never drink Early Times bourbon, that cheap shit fucks with your head.