In case it’s not just a joke, basically if you press the entire pedal, that’s rudder, and if you push with your toes and “rotate” the pedal forwards, that’s the wheel brake. If you apply the wheel brake, your ankle stays in the same spot, but your foot tilts forward.

At least that’s how it is in most planes, I’ve never flown a 737, only small ones and an A321 simulator.