Shopping humiliation comes in different forms.
We can shop for feminine clothes for you whilst still dressed as a male. I'd make you try on the clothes, shoes and underwear and leave the safety of the dressing room to show me how you look. Maybe I'll insist you keep the clothes on as you pay for them!
We could go shopping for me and I
will force you to pay for everything I desire.
Imagine being slapped in front of the counter assistant, verbally abused in front of everyone or whispered threats of blackmail to enforce you to use your credit card or visit a cash point.
Maybe I'll go shopping and have you as my personal bag carrier!