So, in my case, I have to justify my sex toy purchases every time I get a package because I have to pick them up at customs.
Sex toys aren't illegal in my country, but if you get something to put inside you you need a health certificate issued by the Health Ministry itself, and to get that you need a certificate from a doctor specifying why you may need it and a health certificate from the country of origin... now, considering I've been diagnosed with vaginismus I could get a gyno to certify that toys will help my condition, but lo and behold, the US doesn't want to admit that sex toys are meant to go inside you and won't issue health certificates for those.
So, I have to somehow convince them that the endless stream of dildos and vibrators are novelty use only. "It's a prop for a party/costume!", "It's a glass sculpture!", "It's a drink foamer!", "It's a toy! (a real one, not a sex toy. Works with animal-shaped vibrators)". They are not stupid, they know what I'm getting those things for, but they are generally embarrassed enough to buy my stories. They just need something plausible to put on paper. ^^U