Hand pickers
In SkyTeam LHR T4 lounge and just witnessed the same sludgy pompous guy handpick sandwiches with his bare hands despite the tongs out in plain view in front of him. I'm sure he'll sneeze into the sandwiches when he comes sludging back for his 4th and 5th handpicked rounds.
Business class lounges feel like sludge class lounges now.