The
embarrassing and nubish act of doing biceps curls, while standing in a squat rack. This is pure whitebread.
The squat rack is the only place in the gym one can specifically do squats, as the rack serves as the spot / safety.
However standing bicep curls can be done
practically anywhere. Thus to do curls in the squat rack not only reveals one's own know-nothing idiocy, it takes up a station that could properly be used by a legit gym goer.
The sort of thing you'd see at
Planet Fitness or your average community rec center. Done by people who get their training advice from Dr Oz.