Even more fun is to log on to their router (you can bet they haven't changed the password from the default), and change the SSID (the WiFi display name) to TheSeventhPitOfHell or something equally blasphemous.

If their wifi network is public/unsecured go to your browser and type 192.168.0.1. If that doesnt work try 192.168.1.1
If either of them pop up with a login box try admin as the username and password as the password. Or admin / admin. That will get into most common cheap Linksys routers. Or if you can find the brand and model name you can look up the default password online. Anyway, if you succeed in logging into their router you can change the Wi-Fi name to something hilarious & or sacrilegious. Just a fun little amateur hacking project to work on if you're bored.

Ah the little things.

I was reading agnostic.com while pet sitting my neighbors' dogs. He is a chaplain and she is a teacher at a religious school.

They can afford it, download something from Netflix.