1. A dessert pie with filling made from
soft cheese such as
ricotta, Philadelphia or
farmer's cheese. Usually flavored with lemon or vanilla, baked without top crust and often topped with berries or cherries. (Technically a pie, not a cake, since it is
unleavened and contains little or no flour)
2a. A genre of glamour photography and poster art made popular in wartime pin-ups of the 1940's & -50's, featuring modest poses by models and entertainers, displaying lots of leg but little explicit nudity. So called because of the resemblance of a stocking-clad female thigh to the layers of a cheesecake pie.
2b. (Hence) Any product or act of producing (i.e., posing, modeling or shooting) glamour photography or softcore porn.
2c. Any bare female flesh (particularly legs and not of breasts or pubic area) exposed for the purpose of sexual teasing or enticement.
3. (From above) Anything soft, sweet and enjoyable.