The new tattoo -- a strange, self-referential statement the meaning of which Ytterdahl now has a lifetime to ponder -- was revealed on Wednesday morning, along with a video in Norway's VG newspaper, which filmed the event on Tuesday.
Ytterdahl posed for the paper's cameras as a tattooist at the Sabel Ink tattoo studio in his home town of Lillestrøm etched on the bill the studio had given him back on March 25th.
"New Tat!" Ytterdahl declared on the Facebook page, "Stian Ytterdahl, "The man with the McDonald's tattoo", which he set up last week to capitalize on his new-found fame.
The page's few fans initially speculated that the new tattoo might be a receipt from Burger King, or perhaps from a local pizza restaurant, and seemed a little dumbfounded when Ytterdahl posted up an image of the finished work.
Ytterdahl's first tattoo was last week reported around the world, with publications such as Time, the Daily Mirror, the Huffington Post, and the LA Times all running the story.
A post of the picture on Reddit, entitled "This stupid kid got a McDonald's receipt as a tattoo" was up-voted no less than 28,990 times.
Here is Stian Ytterdahl with his original tattoo from last week.