bite off more than you can chew

Idiom458/1,085

to try to do too much, or sth that is too difficult

Heard in 1 movies · The World's End
I think you bit off more than you can chew with Earth mate
Idioms · 458 of 1,085
    bite off more than you can chew meaning & examples · 1 movie clips · from The World's End (2013)