Wiktionary
play silly buggers
vb. (context British Australia New Zealand idiomatic English) To act in a stupid or reckless manner
Usage examples of "play silly buggers".
I hope you're not going to play silly buggers with this information, keep it to yourself or something equally stupid?
They besiege the castle, fire off their ballistae and arbolasts and generally play silly buggers until they get tired and go home.
He want to play silly buggers with his friends and make noise, he can live with his friends.