Writes our submitter in Philadelphia: “We do not have air-conditioned hallways in my building, so there’s been an ongoing debate on my floor about how open the hallway windows need to be for maximum airflow.” Suddenly…SCIENCE!

related: A/C, windows, and Kelvin’s law of thermodynamics

“Understand,” writes Beck in Philadelphia, “I love this city. Filth and all.” But he also had to give props to this guerilla PSA — done in the style of the Philly Tourism Board’s “with love” ad campaign — adding, “I regret not actually being able to photograph all the trash that really was on the ground.”

related: People of Philadelphia, these tomatoes are not for you!

I can only imagine the search queries that went into locating this delightful bit of clip art, which now decorates the ladies’ room at a medical school in Philadelphia. Now pour Lady Sansa some wine.

related: The Shark Week Scriptures

extra credit: Public Toilet Survival Kit

Writes our submitter in Philadelphia: “In our apartment building, packages are left by the block of mailboxes, relatively near where your individual mailbox is. I’ve never had a problem, but apparently not everyone was so lucky…this sign was on every floor of the building.”

related: I hope your cat chokes.

Jo spotted this testimony in a restroom at the University of the Sciences in Philadelphia.

I guessing this particular portion of the Gospel of (the) John was lost in translation from the Greek or some such — a shame, cause “God doesn’t like ugly” would make a great protest sign.

related: What would Jesus do for a Klondike bar?

When men and women are forced to share a bathroom, our submitter in Philadelphia explains, “sometimes gentle reminders are needed to keep the household hygiene at an acceptable level.”

And as Meghan the intern discovered during a summer gig in New York City, sometimes those gentle reminders bear repeating at the office, too.

related: Rocketpubes.com

This note from a “friendly neighbor” was put through the mailslot of Dan’s apartment in the heart of South Philly. Says Dan: “I wanted to put ‘thanks for the advice!’ on the door in response, but thought better of it.”

As infuriating as the note was, “I do love how they phoned in the underlining on ‘of’ and ‘the,’ then went to town with ‘curb,’” Dan says. “Thank you, friendly neighbor, for the best piece of bulletin board material I’ve ever gotten.”

related: Two birds with one snowman

The most irritating part of finding this note propped on her keyboard, says Jackie in Philly, is that she wasn’t the person who requested dark chocolate in the office vending machine. “In fact, I can’t stand the stuff!” (In that case…hello, baby shower gift?)

related: Bun — er, — pizza in the oven

Joshua brings us this amazing pair of notes from his apartment building in Philly.

The backstory: “A bulk package of cat food (probably 20 or so cans) was delivered and sat in the hallway for about 4 or 5 days.  We could see what it was because the sides of the package were cardboard, but the top was clear plastic. (Like what you’d find at Costco).  On day 3 or 4 of the cat food being left in the hallway, the plastic had been torn back and a few cans were taken.” The next day, the package was claimed, and this note appeared…

Two days later — luckily, after Joshua snapped a photo — the note disappeared. In its place…

A day later, the response note was torn down, too.