Please don't be silly edit
Please don't mess about with joke edits - We try hard here to produce something we can all be proud of - silliness doesn't help. Articles are monitored and users messing about face a block or a ban. Why not try and contribute something useful instead? Have a look at the below and get stuck in properly:
The five pillars of Wikipedia
How to edit a page
Help pages
Tutorial
How to write a great article
Manual of Style
Fun stuff...
Thanks - and enjoy yourself as a responsible Wikipedian!