Hahahaha! So good of you to call that out because I had never seen the word written out before either and literally tried every form you suggested and more (you-ie, u-ee, uy, etc). To be honest I settled on 'youey' not because it was the one I thought was correct, rather it was the one I thought most people would understand.

I also toyed with just putting "flip a bitch" but figured some might find that problematic as I'm not entirely sure of it's etymology...