Not really a joke, but I thought it was cute.


                      
                              { W }
               ,.     .,     { O }   
              {^ \-"-/ ^}   { E }
              "   """   "  { M }
             { <O>  <O>  } /--
            ==_  .:Y:. _ ==   
          .""  ` __ __ ' "".
         (,~-~.  ""^"" ,~-~.)
---------(     )------(     )---------
         ^-'-'-^      ^-'-'-^
______________________________________
          |"""" /~.^.~\ """"|
          ,i-i-i(""(   i-i-i.
          (o o o))"") (o o o)
           \(_)/ (""(  \(_)/
            `-'   \""\  `-' 
                   )"")
                   (""/
                    `"
Courtesy of Mary Campbell. (It's part of her sig file)