be up to your ears in
US /bi ʌp tu jʊər ɪərz ɪn/
UK /bi ʌp tu jʊər ɪərz ɪn/

1.
to be very busy with something, or to have a lot of something, especially problems or work
:
•
I'm up to my ears in work this week, so I can't go out.
•
After the storm, they were up to their ears in debt.