But careful, don't use overly fake data either. I remember at one job I put "Jenny Burro Donkey" as one of the customers in my development database, as well as other similar juvenile and silly, but totally PG names. Well, during a demo to the board of our Fortune 500 company, our technical team lead apparently wanted to show new features which has not yet been migrated to test to the manager doing the demo, and so he sent him the link to my machine to look at.... and they accidentaly ended up using that link for the formal presentation.
Apparently, the result of the demo was some company bigwig saying, fire whoever is responsible for the ass jokes.
Well, I didn't know for quite some time how very, very close I was to being fired that day. Apparenly it took quite a few folks standing up for me, and finally my project manager threatening to quit if they fired me to save my job.