Caroline sends this delightful trio of holier-than-thou notes from “a rather famous university in Scotland where many students and staff have delusions of grandeur.”

The first  note was spotted, Caroline says, while exiting a building “where many people work late and lights are almost always burning to help us find our way through the maze of corridors. I found these stuck to just about every light switch in the vicinity. Luckily, I snapped a picture as the next day they were all crumpled into balls and thrown on the floor in what i assume was a protest against sexualising light switches.”

(“Next time,” she adds, “I will make sure my light switch is fully satisfied before I leave.”)

The second note, Caroline says, “is posted in a building where, due to the age of the pipes, the water is filled with lead and unsafe to drink, meaning water coolers are conveniently posted on most floors. I know we are a biology building and we have to care about the environment and blah blah blah, but while we are doing our world-saving research, would it be ok if we just had a cup of water that isn’t going to kill us?” [Ed. note: Yes, the note-writer has a point.]

The final note is posted next to the door leading to one of the outside smoking areas. “Unfortunately,” Caroline says, “it tends to have the opposite effect than intended. Every time I see it, I find myself having to sneak one in.”

Moral of the story this website: even if you’re on the most solid moral/ethical/logical/legal ground, writing an snotty note about it will backfire on you more often than not. [insert maniacal emoticon]

related: Al Gore knows you know drove when you could have taken your new bicycle

Exhibit a) Spotted at a laundromat in Silver Lake by Jessica in Los Angeles…

Exhibit b) From Ronnie’s Diner, also in LA.., by Valerie:

Exhibit c) From Barnacle Bill’s in Sarasota, Florida:

Exhibit d) From, as Miranda explains, ” the local ‘community thrift store’ in Dahlonega, Georgia, where everything is donated, and all the people who work there…are volunteers. Raising the prices to compensate for the volunteers’ efforts? Makes TONS of sense to me!”

But (because the decision had to be made) I would say that this  final note — spotted by Rusty at a B&B in Newfoundland — is my absolute favorite.

related: When you can’t blame the dog

Writes Emily in Austin: “In the notewriter’s defense, this machine has also given me regular Coke when I have pressed ‘Coke Zero’ on many an occasion,  so when I saw this note, I thought I had figured it out. If I wanted Coke Zero, I just had to push the button for regular Coke. (I did…and it gave me regular Coke. Bitch!”) Meanwhile, on top of the machine was a can of Diet Coke and a can of Coke Zero with a note saying: ‘NOT Coke!’ After I took the picture, of course I took that Coke Zero and drank it.”

Diet Coke just can’t get no love…certainly not in Williamsburg, Virginia, as Grace from D.C. discovered.

related: the real thing

While returning a long-lost battery charger, Kaitlin’s Dad echoes the sentiments of parents with adult children everywhere.

Meanwhile, Sarah in Greenville, S.C. shows the downside of giving in to parents’ nagging for unfettered access.

related: why you should not be facebook friends with your parents

“We’ve had trouble with our downstairs neighbors since we moved in,” says Sara in Madison. “Well, really just one of them, a woman in her fifties.” This neighbor’s most recent dose of crazy appeared in the mailbox Sara shares with her roommate (“Little Buddy,” in crazy lady-speak).

I kinda prefer this note without any explanation whatsoever, but if you’re still craving more, Sara explains…sort of. “I had, in fact, bought and put a nozzle on the outside hose so I could spray down an animal cage. We do not, needless to say, have parties in the laundry room.  In fact, we’ve never had a party, ever, because we’re too afraid of her.”

related: sheena is a paintballer

Presenting the winner of the creative spelling (and spacing) of the year award, spotted by Rob in the recently-painted elevator of his Brooklyn apartment building. It has a lovely lyric quality to it, no?

related: Your are welcome to our home

Writes Aimee in Sellersburg, Indiana: “My former boss used to leave these kind of notes posted on our work bulletin board constantly. It was a really boring job, so these little rays of sunshine made coming to work worth it.”

related: I don’t recall signing any bond/contact regarding your use of exclamation points!!!

Writes Toni in Wales: “I found these fightin’ words taped to one housemate’s cupboard. We’ve had some things go missing in the house, so I sympathise with their frustration. But the funniest part of this note, I think, is that this housemate had previously called a house meeting to complain about the other housemates’ infrequent and only slightly passive-aggressive notes. She considered them to be lowering the tone of the household, and demanded that any issues be raised in person (fair enough) — but then posted this doozy with no warning. The 30 exclamation points are a nice touch, though.”

related: What would Jesus do for a Klondike bar?