My dad is a mechanic, I need to learn some time
Mechanic
A mechanic is an artisan, technician or skilled tradesperson who uses tools to build or repair machinery.
Duties.
Most mechanics specialize in a particular field, such as air conditioning and refrigeration mechanics, auto mechanics, bicycle mechanics, boiler mechanics, general mechanics, industrial maintenance mechanics (millwrights), motorcycle mechanics, aircraft mechanics, bus mechanics, truck mechanics, diesel mechanics as well as tank mechanics in the armed services. 
A mechanic is typically certified by a trade association or regional government power. Mechanics
think that anyone should ever have their self-respect or their dignity taken from them."
He also mentioned that his father had instructed him on how to defend himself against bullies. "When I was ten years old, my dad took me to the garage and put a pair of boxing gloves on me and said, 'I don't ever want it to come to this, but you need to learn how to fight.' And I got my butt kicked sometimes, but I always stood up for myself