A Major Car Company Wants To Know How Cool You Like Your CrotchJason Torchinsky5/20/16 3:49pm2277EditPromoteDismissUndismissHideGo to permalink Crotches. Along with feet, the human crotch probably represents the greatest challenge of the human body when it comes to thermal management. The crotch is the lusty armpit of the legs, and they do get hot. At least one major carmaker is aware of this, and came to us for advice. Let’s not let them down.