Gehennom is:
?????? ??”? ?? ???? ???? ??? ????? ????? ??? ??? ???”? ????? ??? ??????? ?????? ??????? ?? ?????? ??????? ?? ????? ????? ??? ???? ??? ??? ???’ ??? ??? ??? ???????? ?? ????? (????? ?) ?????? ????? ????? ???? ??????? ??????? ?? ???’ (????? ?) ??? ??? ?? ???? ????? ???’
(Nedarim 8b)
I heard Pshat that Gehennom will be (like) a Geshmak shiur. Tzaddikim will love it, and Reshaim will wish it was over.