It's funny the cat has a fish because April Fools in France is Poisson d'Avril (The Fish of April). Their pranks are trying to stick a fish on your friends' back. So the kitty giving her a fish is perfect french prank
How to get Chat Noir to shut up and faint. Step Get his Lady(AKA Ladybug AKA Marinette Dupin-Cheng) Step Make Ladybug kiss Chat Noir. Step Leave him alone to think about what just happened. Step Watch him Fangirl like an idiot and faint from happiness.