There are certain surrounding phenomena that occur permanently but for which I fail to find an explanation. They just happen, like Murphy's Laws.
One of them is related to cords, like earphones, chargers etc. I guess you all noticed that no matter how or where you place them, I mean, neatly put in a corner of a drawer or just thrown on the table, when you'd want to reuse them after, let's say, 8 h later, they'd be all tangled-up. In my opinion there should be a public grant for the research on the wire morphing that could clarify this capacity of an apparently inanimate object to mix itself up.
The other one would involve time and its ability to dilate and contract depending on the activity or the lack of one. Actually, when you're doing something is quite normal not to see the time go by, but there are other situations that lack logic. Like, when you get bored and try to make the hours go by, but no matter what you do, even developing a new quantum mechanics theory, the clock will always show that only 2 minutes have passed.
There is also the opposite, and that happens to me a lot: sitting purposeless and doing infinitesimal stuff, and realizing after a quick glance at the clock that half a day just vanished. This, mixed up with the 'tonight I'm going to bed early' saying is a perfect self-fueling match-up.
If you have some personal thoughts or other experience that are beyond human reason please share.
Update: found a new one, that's generally true in my case even though there're many of you who would disagree. It's about getting up a couple of minutes before the alarm goes off, but on out-of-routine occasions. In general, one gets used to a schedule and thus the body is able to predict the getting-up hour; but when you have wake up a 6h30 on a Sunday morning to catch a train , things seem to get more difficult. Still, you are surprised to open your eyes and notice that it is 6h27. I guess there's some kind of latent adrenaline rush that bumps you out of bed at the exact moment, but I have no really idea about how that happens.