Sugar plums can be made from any combination of dried plums (aka prunes), dried figs, dried apricots, dried dates, and dried cherries. The dried fruit is chopped fine and combined with chopped almonds, honey, and aromatic spices, such as anise seed, fennel seed, caraway seeds, and cardamom. This mixture would then be rolled into balls, often then coated in sugar or shredded coconut Today, some candy manufacturers have taken "sugar plum" literally, creating plum-flavored, plum-shaped candies and marketing them as "sugar plum candy".
there is also the sugar plum fairy and there is cakes and other desserts called sugar plum too
depends if you were called that or the real meaning as stated above.
If it is someone calling you a sugar plum, that would be a nickname (them thinking ur cute & sweet like a sugar plum!) :P
Thanks! I didn't know that!