We've had some fantastic contributions to this contest so far, so I thought I'd do a bit of a leaderboard. As there weren't any rules I made up my own. I used length and then girth rather than volume. I also used the smallest size the guys stated for their cocks, as some varied considerably in what they claimed. A couple of the guys are young and possibly still growing, which might explain that.
At the moment there are four guys that stand out as being 'Big Down Under'. In reverse order, they are: -
Waterboy, with his magnificent 9" x 6"
HorseHungandYoung, with an equine 9" x 6.3"
9inchGaz, boasting a stupendous 9" x 6.5"
and the current leader and officially 'Biggest Down Under' is: -
Sebastein, with an eyewatering 9.2" x 6"
Congratulations to Sebastein for being the proud owner of The Biggest Aussie Cock on LPSG...unless anyone out there can challenge him to a cock fight!