huge chunk of meat with a big heart 

A huge chunk of meat is a person, usually extremely buff and tall that looks intimidating but is actually very nice and couldn't hurt a fly

examples of a person like this is Jonathan Joestar from the popular anime and manga JoJo's Bizarre Adventures

Person1: how was math class? what do you think about your new teacher?
Person2: He's a huge chunk of meat with a big heart

huge chunk of meat with a big heart by YesImRealManIloveToDoTheCrime. September 3, 2021