April Fool's

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AnApril Fool's Day is an annual event inevery year on April 1, and is celebrated by practical jokes or humorous content (such as the US, which couldposts under this tag). The event can be thought of as "Notice Your Surprise" day. 

See also

An annual event in the US, which could be thought of as "Notice"Notice Your Surprise"Surprise" day. 

Special rule for this tag: Please don't add entries to this tag during April Fool's, to not spoil all the surprise as soon as people see the top of the post, but feel free to add any old April Fool's jokes starting on the 2nd.

An annual event in the US, which could be thought of as "Notice Your Surprise" day.