Calvin from Edmonton:
A ghost in a cemetery is a grave sight.
A misspelled epitaph is a grave error.
Calvin says, “I know, the second is a p.o.w. not a pun, but the two make a nice couplet. And I actually like the second one better. I guess it’s just gravy. Hmmm, maybe I should have said a song sung poorly at the internment is a grave air? No? Ok, I’d better go.”