Show Off Trophy in Fall Guys
Win an Episode with a custom Punchline equipped
How to unlock Show Off
Punchlines, also known in-game as Celebrations, are customisable items as part of the Theatrics section of the customise menu. These Punchlines play once you win an episode, with other players seeing it as a sort of victory screen. By default "Plinth Drop" is the only unlocked Punchline, so any Punchline purchased from the store will count for this trophy.
You can identify Punchlines in the store by the fall guy pictured on a small cushiony plinth, for example as below. Win an episode with one of these equipped will unlock this trophy.