Г403
ПЕРЕВОРАЧИВАТЬСЯ (ПЕРЕВЁРТЫВАТЬСЯ) /ПЕРЕВЕРНУТЬСЯ В ГРОБУ
VPsubj:
humanusu. subjunctive or, less often,
pfv nit) (of a deceased person) one would become extremely indignant, horrified (if he found out about this)
X перевернулся бы в гробу = X would turn (over) in his grave
X would roll over (be spinning) in his graveX would die a second death.