To tempt fate means to do something that is dangerous or likely to have a negative outcome, and in this context the speaker saying its best not to push their luck ie no tempt their fate by inviting the person in to eat.
Given the statement "I would invite you in to eat something, but my mom must be nearly here, so its best not to push my luck.", is the statement "I would invite you in to eat something, but my mom must be nearly here, so its best not to tempt fate." is true?
- Yes
- No
- I don't know