You use "beefy" when you refer to muscular guys having notable sexual attraction, such as six-pack abs or big arms. This may be gay people's definition.

looking and/or being as hot and jacked as jacobobitch

A fat person who also happens to be very muscular.

In reference to a woman's vagina that has saggy pussy lips that swing when she moves around or beef curtains.

Beefy Coolins Of Oakville ... (who lives in the stars)

fat ass or fat head

a girl who is hardcore and hot