A "Mech-Warrior" is any woman (or man) who wears high heeled shoes, is chubby and has big boobs that stand out like flak cannons although she (or he) is incable of properly walking in them. Mech-warriors are characterized by their awkward posture and halting gait while walking, like the giant robots in (no-Japanese) robot fighting games. A mech-warrior can be futher defined if the woman has a pronounced hunch in her back caused by the poor posure her high heeled shoes promotes (see "hunchback")
Tommy: "Damn that's a fine bitch!"
Timmy: "WHAT?? she is fugly and walks like the hunchback of notre dame, man"
Jimmy: "yeah, she's a total mech-warrior"