We no longer say "Ni"
Ok just so you guy's don't think I'm a total moron, "Whoosing" is the practice clearing long, stale threads that have been dredged up by googling adolescents. The goal is to send all the tired threads below the 24 hr line leaving the "Woosh" as the only active post. I have successfully Whooshed twice and think (hope) I have only sunk the offensive posts.
If you care to join the practice- do so before someone objects.
(after reading this myself, I guess it doesn't do much to curtail the 'moron' impression :-)