Toilet Seat
#27
One nice thing about being single, male or female:
The toilet seat is always just as you left it!
Leave it up, it stays put.
Leave it down, and there it will be next time you use the bathroom.
Personally, I prefer to keep the lid closed, keeps cats from drinking from it and from knocking things IN to the commode.
Marti Gardner 
That is one off my biggest complaints. I HATE it when my boys leave the seat up!!!! Grrrrr….