.Bobby is a teenager who does something that really bothers his Dad. When Bobby watches TV (Robot Chicken, Scrubs, & Blue Collar Comedy Tour) then he puts his feet up on the living room table. Dad likes to line up snacks on the living room table when he watches TV (Three's Company, Everybody Loves Raymond, & Bill Dance Outdoors). The Dad hates seeing the crud from the streets of Boone when he goes to line up his snacks.

So the Dad wires a switch under the table. If Bobby puts something heavy like his feet on the table then a very loud radio is turned on.

 
     
  If Bobby continues putting his feet on the table as before then the effect is: