Clark got the temporary inking on his back after clashing with Barlow during Sunday's (October 7) results show, which saw him controversially saved over the Take That star's act Carolynne Poole in a chaotic judges' vote.
Barlow was seen storming out of the studio when Louis Walsh sent the vote to Deadlock and Poole was revealed to have received the least support from the public.
Clark has now proudly displayed his cheeky tribute to the X Factor judge in Heat, adding: "[I call him] Gary Bore-low. Just bore me later Gary, that's my little saying now."
X Factor producers have reportedly held a 'crisis meeting' with the judges and host Dermot O'Leary over the controversy, which has seen Barlow threaten to quit the show.
More images of Clark's tattoo and an exclusive interview will appear in next week's issue of Heat, out on Tuesday (October 16).
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