This was exactly what I thought of when I read the headline. Very amusing at the time, and it somewhat unsurprisingly was effective.

I lack your laudable sense of decorum, so I'll post the link...

https://www.cbc.ca/news/trending/street-artist-wanksy-spray-...

There have been copycats...

https://www.vice.com/en/article/guy-paint-penis-potholes-new...