Couple of ways to do this, depemds on your video out options on your tv. Go from the TV out on one TV to the in of the other. You will have to tune in the 2nd TV to channel 3 usually. You can also go...
A farmer got the idea while observing the lines created by the plow out on his field. RCA exc.'s patented the process and he nor his family ever saw a dime for his invention.
Because you are considered an adult at age 18 and are able to purchase anything in most states except alcohol. And are considered mature enough to watch whatever you please.