You're buying a wrench online. You add it to your cart. Dang, 5 day holding period while the manufacturer does a background check. Ugh, you need to fix your toilet. You head over to a hardware store and get a wrench. The checkout person jokes "I hope you're not going to murder someone with this!" You roll your eyes and say "ya got me!" and put your hands up like Walter White. The checkout person suddenly gets serious and refuses to sell you the wrench to legally cover the store's hide. You go to a second hardware store. This time you've learned your lesson. You buy the wrench without saying a word. You do not respond or interact with employees and you keep your purpose a secret. The End.
What an ideal world.