抠脚大汉赤脚大仙
[kōu jiăo dà hàn chì jiăo dà xiān]
Meaning 'The Big Foot Scratcher – Barefoot Great Immortal,’ it’s likely chosen in a self-deprecating manner or for its humor value, describing someone as both casual/dirty (scratching one's foot) and whimsical/mythical ('barefoot immortal') simultaneously.