This Guy.
I served in the Royal Navy during the Falklands
aboard HMS Invincible as Chief Petty Officer and we all had nicknames, mine was Smudge. His was "Never Sweat" because he never lifted a finger outside of flying in heavily guarded manoeuvres.
I honestly believe he thinks he got that nickname because he was so cool, but he got it for being a lazy do nothing loafer. (pedo)