up to the eyeballs
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up to the eyeballs (in something)
Extremely busy (with something); deeply or overly involved (in something); possessing, filled up with, or overwhelmed by an excessive amount (of something). There's no way I can take a vacation right now, I'm up to the eyeballs in work at the moment! I only meant to be peripherally involved in David's business venture, but, before I knew it, I was in up to the eyeballs! Dana was worried she wouldn't find any work as an accountant working for herself, but she's up to the eyeballs in clients!
up to the (or your) eyeballsused to emphasize the extreme degree of an undesirable situation or condition. informal
2000 Time Consumers are up to their eyeballs in debt, and the strain shows.