Here in Sweden there has been som cases with changing the Kingdom hall signs. In some congregation the elders went nuts, in others they were calm and more or less laughed obout it.
But, someone probably discovered that it is possible to rearrange the letters in the word "Rikets sal" (Kingdom Hall) into "Skitarsle" ( direct translated "Sh*t-a**hole", or freely translated: "a**hole full of sh*t, an invective) Probably it were young boys doing this as a prank. But it has happened in a lot of towns, and got some media attention. Mostly humouristic coverage. A lot of peole had a good laugh about it.
In the XJW-community the word "Skitarsle" is nowdays the common expression for those Kingdumb Hells.
Some pics of "assho.....hmmm Kingdumb Halls with rearranged letters.