超人总是穿三角裤飞行因为三角形具有稳定性
[chāo rén zŏng shì chuān sān jiăo kù fēi xíng yīn wéi sān jiăo xíng jù yŏu wĕn dìng xìng]
Translating this name would be 'Superman always flies in briefs because triangles have stability'. This quirky username humorously juxtaposes a known feature of how Superman is often depicted (wearing tight-fitting, sometimes brief-like clothing) with an unrelated concept of geometry.