While engaged in sexual intercourse, your female partner is on top riding the penis. The male takes a razor or sharp knife, slits her throat from ear to ear and lays back to enjoy the flood of insane vaginal contraction, tremors and convulsions as the female body drains of blood.
Normally Death Quivers are done in exchange for money to 18+ young daughters of families from poor countries. Became famous in the Philippines back the late 80's but found through the world where $100 can feed the remaining family members for months. An act of pride and love for all family members remaining.