Before “Friends,” David Schwimmer had some odd jobs, which included being a process server for his divorce lawyer mother.

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

Aside from being a rollerskating server at Chicago's famed retro-style diner ... going on to reveal that he handed divorce papers to rockstar Rod Stewart, of all people. "Thank goodness I've ...