The other night I left the Triumph up on the rear-wheel stand* after oiling the chain. It's a habit. I use a waxy lubricant that doesn't let go of the chain for ANYTHING - so long as I let it set up before riding. Since the oil has to set, and I don't like little puddles of chain lubricant all over my garage floor, I usually just leave it on the stand overnight with some cardboard underneath to catch any drips.
The next morning, I pull the cardboard out, lower the bike, and it's off to the races.
Except this time around, the stand slid apparently slid forward during the night so the rear wheel was in the way, preventing me from lowering the bike.
This is not the kind of problem I like to deal with at 6:15 in the morning.
I managed to manhandle the bike forward enough to lower the wheel, but I was covered in grease and dirt for the rest of the day.
*I've got this one, if you want to know