Go off

Go off...

 A sound that is programmed to be activated at a specific time, either pre-programmed or by stimulus. “Go off” also means to explode. The preposition “off” seems to be a contradiction, since the opposite, “on”, seems more logical. 

*Obviously a sun dial cannot be programmed to “go off” like an alarm clock… and that’s why the comic is funny.

1. A landmine goes off when someone steps on it, a hand grenade goes offwhen the safety pin is released and a bomb will go off when it is triggered through a number of mechanisms.

2. When your alarm clock goes off, do you hit the snooze button so that you can sleep for an extra 5-10 minutes? How many times do you hit the snooze button before you finally get out of bed?

3.  Once a car alarm, house alarm or shop alarm is activated, if the circuit is interrupted, the alarm will go off. Have you ever had a problem trying to sleep because of a car alarm in your neighborhoodgoing off repeatedly?