Which part of Don't Understand Pilot T-Shirt

Which part of Don't Understand Pilot T-Shirt

• Perfect birthday gift for a pilot who loves his job where a plane can fly like a plane. Great gift for a coworker who prefers this six-pack of flying instruments than the one you get while training at the gym.
• Pilot Sixpack T-Shirt Funny humour shirt for a pilot, aviator or professional pilot who love flying planes and went to flight school as students. Gift for a friend who can connect with aviation.
• Lightweight, Classic fit, Double-needle sleeve and bottom hem