I did this for years, entering people with funny names, nicknames, etc. But my contact list got really messy, after a few years I couldn't remember who were half the contacts, so I renamed them all and now I add last name and first name, pretty boring I know.. Funny video.
I usually just hand girls my phone to put the number in. Saves me the awkward conversation because 75 percent of the time I don't remember their names. I never call bar numbers though, unless they seem special. Just delete them the next morning.