Alright, since there are lots of gems of April Fool's jokes that are going to be flying around, I think it might be good for people to post up here suggestions, pranks they themselves pull, or good jokes that they spot.
For those of you that are CS majors, you should immediately realize that the language is a fully complete and functional language. So you ought to say not "This is a sham!" but instead "why, God WHY!!"
"That was quick."
"Well you know, when you don't do it right it doesn't take as long."