we were all having a fantastic group discussion about sports until mike decided to do a little leftfielding and talk about his mom's body odor
adj:/ the act of contributing a comment amongst a group of friends that is completely irrelevant to the current subject matter currently discussed
"we were all having a fantastic group discussion about sports until mike decided to do a little leftfielding and talk about his mom's body odor" What is the definition of "leftfielding"?