The 'Friends' actor had an interaction with the pop icon when he was a teenager, but it had nothing to do with show business.

Friends alum David Schwimmer revealed on The Late Show With Stephen Colbert that he once served Sir Rod Stewart divorce ...

Before "Friends," David ... a laugh.Schwimmer joked that as an 18-year-old at the time, getting tips about where to find people to serve them papers made him feel like he was James Bond.Alas ...