Young widow comes back her husband’s grave every week
Here’s a shorter version of the joke that keeps the meaning intact:
A woman visited her husband’s grave weekly, always walking away with her back turned. A young man noticed this and complimented her, saying, “I admire how you never turn your back as you leave—it shows such respect for your husband.”
She looked at him and replied, “Well, my husband always said I have a behind that could raise the dead. I don’t want to take any chances!”