You should always carry the ceramic from a sparkplug in your pocket, just tip it on a windscreen and it will shatter to bits ;-) YouTube - Crackin a Truck window with a piece of spark plug FTW
@jaw started
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You should always carry the ceramic from a sparkplug in your pocket, just tip it on a windscreen and it will shatter to bits ;-) YouTube - Crackin a Truck window with a piece of spark plug
FTW