The aim of the session is to share and discuss manifestation of humour in our science communication activities, our science centres and museums. Does humour help in any way? It adds a “fun factor” to the visitors’ experience and makes people think more flexibly, but doesn’t it divert our visitors’ attention from the scientific content of our programmes and exhibits? Are there groups of visitors we can rather discourage by not being serious enough? We can easily point to some funny science shows, but what about exhibits