我结婚那天你来不来我不来你结个屁婚啊
[wŏ jié hūn nèi tiān nĭ lái bù lái wŏ bù lái nĭ jié gè pì hūn a]
'If you don't come to my wedding, what's even the point for me to marry?' This is a humorous and dramatic expression emphasizing how important a specific person's presence means to the user during a critical life event like marriage.