That would be why you send them your paperwork ahead of time, demanding their proof of claim. That way you don't stand there, shrinking to 1/50th of your size (Fred Flintstone style) in front of them...
Printed copy · Anthology Volume 1, page 718Printed copy from The Tender For Law Anthology, Volume 1, page 718 (printed 14 June 2014). Added by this site; not part of the Facebook export.