One time I bought a subscription to a pegging website. A website where chicks bang dudes in the ass with strap-ons. But apparently the purchase was considered unusual by my credit card company, so they froze my card and told me I had to call to confirm recent purchases.
I did call, and the woman on the phone asked me if I purchased a subscription to that pegging site. I said yeah. She said okay, then unfroze my card.
I just had to tell someone.