April Fool's Day isn't all about prank calls and plastic poo; it's the day you get to do mean-spirited things under the guise of good fun. Give your mother a cardiac incident by announcing a bi-racial pregnancy, see how hard your son cries when you stage a pet death or watch your husband crestfall when you tell him his man cave tested positive for radon.
Avoid announcing an engagement or showing off a new tattoo on April 1st, unless you want to know what people really think.