'scuse me WHAT?!?!
Seriously. They would inject a liter or so of saline on either side. Right in the soft spot of the crotch, in the seam to the upper thigh.
The midwife jokingly said that the ensuing pain of the saline blocks out the pain of childbirth. A lot of Swedish women use that method but natural childbirth is still very popular.
Nitrous oxide is considered the wimpy way out.