Come on over here and sit on Granny's lap.  I'm going to talk serious to you for a minute.  Honey, when you pass along a lie pie, it makes folks think you're not too bright.  I'm only telling you this because I love you.  If you can't vouch for a viral email, then you don't have any business sending it on to anybody else.  It doesn't feel very good to get a lie pie from someone you love.  You sort of lose a little respect for them.  Is that what you want?  I didn't think so.  Now, give your granny a big squeeze.  You know I love you no matter what.