This isn't exactly side-splitting, but my home isp, virgin media uk, does dns hijacking for domains they cannot resolve. If you try to access http://bugzilla.anynonworkingdomain.com for some reason it interprets that as a search for the term "porn". I have lots of tabs open to our bugzilla in work (where bugzilla.mycompany.com resolves correctly) so when I take laptop home, open it up and chrome refreshes tabs it looks like I have opened 20 tabs searching for porn.

https://imgur.com/a/fyu0D