How do u lance a boil and does it HRT or do they numb it?

Depends on the size. Very small boil can be lanced with the point of a needle and that hurts less than numbing does. Larger boils need to be numbed.
Sharp blade N maybe. If the boil is superficial and has a "white-head" area, a simple lancing with a sharp blade will often do the job (without need to numb it). If thick and in sensitive area, you may get some Lidocaine as a local anesthetic before lancing is done. Small boil may not need packing--larger ones may. Since these surgical blades are so sharp, pain is not too bad..So worry not country! good luck.