In this chapter, I focus on the experience of prefigurative politics from without (e.g., as observer not directly involved in the prefiguration itself). Based on an interdisciplinary reading of social psychological, anthropological, and philosophical work, I situate experiences with prefiguration from without as experiences with Ernst Bloch’s concrete utopias. These experiences leverage the human capability for imagination and demonstrate that a radically otherwise is a real possibility. Such upside-down worlds resonate strongly with the politically subversive origins of carnival. Based on this observation, I argue that prefigurative projects, events, experiments, etc. can be more effective in disseminating ideas and generating solidarity when they embrace the link between prefiguration and the carnivalesque. This means specifically to double down on the community-building and subversive potentials of spreading joy, playing with identities, and breaking down barriers between audience and spectators. Paired with the not asking, just doing approach of prefiguration, these tactics heed Emma Goldberg’s call to put the fun back into the revolution. Existing prefigurative projects that employ carnivalesque tactics and a proof-of-concept quantitative study emphasise her call and encourage further analysis of prefigurative politics through the lens of carnival.