A large group is split into two and each is given a culture to act out. The culture should be explicit and different from modern day norms (ex: Shoulder shaking means yes and hand flapping means no; men cannot approach another man without a woman’s consent; socially people should stand arms length apart at all times, etc.)
The two groups should get proficient at their own culture and then representatives should be thrown in with the other group and explain their confusion to their own culture.
Eventually both groups should end up together and discuss the differences and uncomfortable feelings associated with not understanding norms.