* Not being hungry
* Having dietary restrictions
* Simply not liking chocolate cake
The phrase is often used in a polite way, acknowledging the offer but declining it.
Here are some examples:
* "Would you like some chocolate cake?" "No thank you, I'll pass on the chocolate cake."
* "I'm full, but I'll pass on the chocolate cake."
Note: The phrase "pass on" is a more formal way of saying "no" or "I don't want any." It's often used in situations where you want to be polite but decline something.