Today is National Roof Over Your Head Day, which is all about being thankful for what you’ve got (like, presumably, a roof over your head) and doing things to help others who aren’t so fortunate. Such as, for instance, making a donation to a shelter. We should also be thankful for things we don’t have, like unwanted and inappropriate objects on those roofs over our heads. We’ve compiled some such examples of 10 Odd Things on Roofs that you probably don’t want over your head.

Actually, if it’s dead, you could have a great sushi party. If it’s still alive, though, definitely no good.

Class on the roof? That sounds like fun, except if we get really frustrated during an exam we might just end it.

Um, a street on the roof? Sounds noisy and uncomfortable.

Rock ninjas! This is actually pretty awesome, as long as they step softly and don’t play at night.

Roof surfing FAIL, really, really bad. Some things just weren’t meant to be.

A house on the roof, with real grass and goats, sounds nice, but do you have to climb down every time you want to use the bathroom?

That’s a cruel place for a game of hopscotch.

If we were parking our Ferrari on the roof, we’d pick a nicer roof.

Well, that’s not exactly what the phrase “green roof” makes us think of, but alright.

This must be some kind of counter-terrorism exercise.