It's more  of a metaphor about the person as a whole  tools meaning  the sum of all parts including the brain  heart  and soul......when your with someone and you click its because  the tools they bring to a sessions  can be  a sense of humor an awareness of your needs  or they might just be blessed with mad skills  in bed  boobs  not so much......a big penis?  who cares  not me....  just give me somebody  that is a good fit  with  my personality  the rest will follow....