The grandchild-in-law of one's parent-in-law's sibling.
My first co-cousin-nibling-in-law is a good person.
When you shit yourself while driving
He shat himself a Kentucky Co-Pilot on the way to work Monday
It is an intern with whom you work.
My co-tern is such a bitch; she never does any work and shops online like a fiend.
When a person is a coworker but also a good friend
Hey man thanks for covering for me you're we are now co dudes
The husband of one's spouse's sister.
My co-brother-in-law is a good person.