April Smurf's Day is a day of observation for the Smurfs that takes place in the cartoon show episode "April Smurf's Day", presumably around April 1. It is analogous to the human observance day of April Fool's Day, where the Smurfs are allowed to play pranks on one another so that they may be able to laugh at themselves and not take life too seriously. It is a day that Brainy and Grouchy both hate, the former particularly because Smurfs tend to play a lot of pranks on him.