Preinlaws

Preinlaws = pre-Inlaws = your fiancee's family.

My girlfriend's father announced mine and Lucy's engagement at her family reunion, and I met all my new preinlaws.

by Colin Farrell. As of Miami Vice, I don't want to hear June 18, 2006

Pinlaws

Potential In-Laws, i.e. your girlfriend/boyfriends parents.

Luke: “Hi James, are you playing golf with us this weekend?”

James: “I can’t this weekend as I am going to visit Carly’s parents!”

Luke: “It’s good to see you putting in quality time with the Pinlaws!”

by Lukeg83 January 5, 2011