This is a common malady, and one that I have many solutions for.

Your girlfriend should have but one ‘nickname’ for you, and that ‘nickname’ should be ‘sir.’ The key to stopping her using a ‘nickname’ for you, or any other part of your body, is to refuse her entry to your abode until she realises that this is the reason that you are setting her out like a common dog.

If she refers to your appendage as anything other than its scientific name – or, indeed, "the source of your power," you must show her that you are both the law and the lash, and lock her in the cellar until she shows you – and it – some respect.

The Original Post is Located Here: How do I ask my girlfriend to stop using a nickname?