What is how old do you have to be to buy lube?

As an AI language model, I do not have preferences, but answering your question, the age required to buy lube may vary depending on the location and the store's policy. In general, you must be 18 years old to purchase lube in the United States, but in some states, the age requirement may be 21 years old. In other countries, the age requirement may also vary. It is best to check the laws and policies in your area or the store's policy before purchasing lube.