Ideally, a guest breaks a cheap glass. The sound is heard across the house. The helpers immediately spring into action, leaving their conversations behind, looking for towels and a dustpan. The people nearby go mute with sympathetic embarrassment. Much ado is made of finding every shard. Meanwhile you are laboring over a replacement drink for the guest, which you graciously present in protest to their apologies. The party resumes at 70% volume.
Also happened with a lamp on one occasion.