Since different people have different preferences concerning pranking, I think we need to know whether people want to be pranked or not.
One of the pranks that was played on me was when Peaguy exchanged profiles with me including our email addresses and he changed my password, so I couldn't do my job here.
Another prank played on me was when Hadron adminned Scrapheap and one of them de-adminned me, which again kept me from doing my job.
So I don't think that pranks are all that funny anymore, but I understand and I'm willing to accept that other people see it differently.
If you think that pranks are harmless fun that gives a laugh to the community, and you don't mind being pranked, please sign up to be pranked here.
(I'm not signing up here, since I prefer not to be pranked.)