1. Somebody really ripped and muscular. Usu. male.
2. Used ironically to describe somebody extremely overweight. Popularized by an early episode of South Park in which Cartman drinks weight gain formula and gets really huge.
3. A cake made of meat. Almost always beef.

this can also mean anyone that is beefy, muscular, body builder. It's a goofy way of saying "your buff"

a strong, sexy man

Term used to refer to buff/ripped males. Beefcakes are usually good-looking and enjoy displaying their muscles to the masses.

A large and muscular man who enjoys hockey, football, and other sports. He also enjoys eating. The typical beefcake is not the sharpest tool in the shed, in fact he is rather dumb.

A person, usually of stocky build, that frequently talks about working out and strength.

A male, usually college-age, who is considered to be buff because he has freakishly huge muscles, plays a lot of sports, and is more often than not very tanned. Many women, especially those who might be referred to as bimboes, find beefcakes attractive, but they fail to realize that beefcakes' brains are contained in their biceps. Beefcakes can be found at college football games, gyms, and if they are comfortable with exposing themselves in such manners, Chippendales.