Sick of teenagers abusing the use of your house phone? Well your prayers for a solution have been answered. I give to you the Diabolical Phone Switch.
Step 1: Disclaimer
First let me say that I will not be help responsible for any of the dumb crap that may result from any ideas you may derive from the following text.
I am basically presenting a device that I created in a few nights worth of free time to cure a pesky problem I have been having with phone abuse from three teenaged daughters.
Be aware that this device uses line voltages from an AC power outlet, and that proper care should be taken whenever line voltages are to be tinkered with.
So be safe and don't be stupid.