I guess I'm triggered by "ball joints". True story. First car is beat up 1970 Hornet (maybe the worst car ever made, and yup my folks did own an Edsel). Hornet needed everything done - a complete POS - including ball joints. Me and my Dad worked on it in our unheated garage -> -10 degrees outside. Finally finished at 2:30 AM so I could get to classes that morning - both of us with bloody knuckles on both hands. One of those experiences I won't forget.