Breasts that are only fat or a result of being fat; when a woman's clavicle and/or collar bone aren't defined but she has a full chest; a woman has chubcakes when you can't tell where her shoulders ends and her boobs begin.

Got the covid-19 vaccine

Part of the skinny white boys with wavy dark hair category, the 'Chubcakes' is often racist, sexist, and everything-else-ist. He gets away with this tomfoolery because he is also what people call 'Adorablecakes'. Fluent in making the orange sound, he is able to adorable-fy girls everywhere.
Some Chubcakes also come with a cane accessory.