Serial Schlong

In early March 2012, Nobservatory experts discovered a frighteningly well crafted nob. A classic ejaculator with pube detail, refreshingly etched in profile, an unusual twist.
The following day, the Nobservatory was confounded when another nob appeared overnight, a  mere stone's throw from the first.
The second schlong, though distinct by it's profile and overall appearance, bears alien features. Unlike the original nob, this second one is dichromatic, the pink shade used in the first nob is still there, but features only in the details. The familiar balanced outline is now etched in green, transforming the todge into a Big Green Wanger From Outer Space. The pink of the first nob can at first be seen only in the jizz and pubes detail, but the eye attunes into a sinster new development of a vein in the same colour. Could this be indicative of the Nobartist devolving?
Investigations are currently underway to determine the nature of this phallic flurry, could it be the start of a dong deluge? Is this the work of a serial cocker?
Roving Reporter, John Thomas, will be working with the Nobservatory to penetrate the mysterious circle of the Nobartists, boldly investigating the meaning behind all this and asking the greatest question of all... Why Draw Nobs?