A surprise party is a social gathering organized to celebrate a special occasion, such as a birthday or an anniversary, without the guest of honor knowing about it in advance. Friends and family typically plan the event, coordinating details like the location, time, and guest list to ensure the surprise is successful. Decorations, food, and activities are often chosen to create a festive atmosphere. The key to a successful surprise party is secrecy. Organizers may use various tactics to keep the event hidden, such as creating false plans or distracting the guest of honor. When the guest arrives, everyone shouts "Surprise!" to reveal the celebration, making it a memorable experience for all involved.