No prize, as the number has technically already passed, through the years many posts have been deleted (mostly offtopics in the tech boards), but this time it's a 'real' 100.000 + that wil stay.
Party will hopefully be on the forum itself, and looking forward to more fine activity here in the times to come.
And thanks to "GB is not OK!" it will very soon be 200.000 posts :O) (...hope not for you & your bike's sake, but it's an interesting, detailed and educative topic).