No pain, no gain, no idea what half these terms mean.
The dramatic act of hurling something (usually a fishing line) with intention, or a Hollywood staple listing all the actors pretending to be other people. Also: a medical device that keeps you prisoner for six weeks.
A street dance move defined by impossibly fast lower-body movements while the upper body remains perfectly still, creating the illusion of gliding effortlessly across the ground.
The lifting/shortening portion of an exercise where the muscle contracts under tension (e.g., driving up in a squat). It's the 'hard' part where the actual movement happens.