有完没完

有完没完:

Literally means:

finished or not finished

Actually means:

完, end.

The phrase means that one should stop talking about/doing something.

By using this rhetorical question, one tries to stop somebody else from bugging or doing something repeatedly. Derogatory.

完，结束。

有完没完，该结束了，别没完没了。

指有些话不断重复或有些事持续不停，让人反感，试图通过反问加以阻止。具有贬义色彩。