The clip comes from 50% Off, Octopimp's abridged parody series based on the swimming anime Free, where Makoto Tachibana is reimagined with a much sillier personality. The series built a following online in the mid 2010s for rewriting serious sports scenes into fast, absurd comedy, and short lines like this were clipped and shared on soundboards and in edits. Its lasting appeal is that the joke works outside the episode too, so creators still use it whenever someone new shows up.