The trick is not to let your safety pin be removed....

...but the best thing is to let your saftey pin, as seen above, be removed by the other and wait, if it is tustworthy time will tell or better the fuze will not ignite but sparkle around the explosive and will keep the kick alive. Untrained or unserious personal might cause injuries.

Menschen werden schlecht und schuldig, weil sie reden und handeln, ohne die Folgen ihrer Worte und Taten vorauszusehen. (Kafka)