Oh Dad, Poor Dad, Mamma's Hung You in the Closet and I'm Feeling So Sad (1967)

"This motion picture will probably do as much for mothers as 'Moby Dick' did for whales..."

A woman brings her son and husband to a tropical vacation spot for a little rest and relaxation. The only problem is that the husband has been dead for quite some time, and his wife had him stuffed and carries him everywhere with her. Complications ensue.