如果你说自己是 up to your eyeballs (in something) 那就是在说你正在为一项具体的工作而忙得不可开交，一点闲暇时间都没有。

例句

I'd love to go the cinema but I'm up to my eyeballs in marking. I've got another ten papers to get through before I can even think about going out.

I'm up to my eyeballs in work at the moment, so I don't think I could take any time off for a few weeks.

请注意

作为动词 eyeball 意思是用一种挑衅和威胁的眼光盯着某人，或对峙。

例句

I know they don't really like each other but did you see the way they eyeballed each other when they passed in the corridor?

Boxers usually eyeball each other before they fight. They don't want to show any weakness.