Plump shape and size, often sexualizing something not usually seen as sexual, used in comedy; relating to the posterior of an individual or character. as in: "Miss Met has a fattydumpy" coined by Jessica @jessica_smetana on the Dan Le Batard show.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!