Personalized Mechanical Eggineer Infant Tutu Bodysuit. Eggineers are engineering eggheads and this egg with gears in hand and on it's hard hat with mechanical eggineer text, is a humorous design to tickle your mechanical engineer's funny bone at birthdays, holidays and graduation. Tutus are all the rage! This one is made of matching tulle and stitched right into a soft creeper.