The penises were not because of the sewer backup, it’s just what you expected to see everyday. Edited the original post to clarify.

There was one study hall where a penis was drawn on the chalkboard every day. One time, the art showed the ejaculate dribbling a bit. The teacher came in, looked at it, shrugged, said “at least it’s a little more accurate,” erased it, and sat down.

I know right? Kids don’t need any reason to carve penises onto desks and tables and walls. They just do.