bite off
To use the teeth to pull off something. A noun or pronoun can be used between "bite" and "off." We had to take the dog to the vet after he bit off and ate a piece of a questionable-looking plant. Once the lollipop was soft enough, I bit it off the stick
*bit off
and *little offa little crazy; a little out of whack. (*Typically: be ~; find someone ~.) This guy's a little off, but he is harmless.
bite something off
to remove something in a bite. Ann bit a piece off and chewed it up. She bit off a piece.