Nagitis
When your girlfriend yells at you for being a nagging pain in the ass and then starts nagging you for yelling at her.
'You're the one who kept bugging me about my hair!' 'And you're the one who bugs me about everything!'
'I'm not nagging you I'm just reminding you!' 'You're nagging me for reminding me!'
'You nag me about my nagging and I nag you about your nagging!'