walkingdude

I vaguely remember watching a play back in the 70s involving a gang of bank robbers breaking into a vault. The part that sticks out in my memory is where one of the older members of the gang tricks one of the younger lads into swallowing a lump of plastic explosive and then warns everyone to steer clear in case he breaks wind. I have a feeling the scene may have been reused in a more up to date film but wondered if anyone knew the title of the original play.
Any help much appreciated.