1
general::
Phrase(s): bite off more than one can chew
1. Lit. to take a larger mouthful of food than one can chew easily or comfortably. • I bit off more than I could chew, and nearly choked. 2. Fig. to take (on) more than one can deal with; to be overconfident. • Ann is exhausted again. She’s always biting off more than she can chew.
McGrawhill's American Idioms And Phrasal Verbs