When in a game, a paid skin is so overused that it is no longer a signifier of a baseline of skill. Usually this happens due to either a skin's immense popularity, or the skin being commonly offered compared to other options.

Comes from when The Reaper in Fortnite was used by a third of every lobby, leading to no indication of skill when spotted, analogous to seeing a default.
"You see that guy? He was dog water and was using the John Wick."

"Yea, he was a real John Default."
by Onandonandomnom November 29, 2022
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