While generally I would tend to avoid dick jokes in the workplace, primarily because they're not particularly professional, it's a poor argument that they are not appropriate because 'someone has a problem with them.'

In a large workplace, 'someone' will have a problem with any joke about any topic.

Which is a great reason for why you should keep edgy humour out of the office. In the US, we value the right to make a living in a hostility-free work environment more then the right to say whatever you want at work.