What topic could you give a 20-minute presentation on without any preparation?

@TopCat is that to do with your profession?

@TopCat I became a certified ISO 13485 auditor a few months ago.

@FigNewton that's awesome! Well done :D

@TopCat Then our company announced they're shutting down this year so I've not done any audits...lol. At least it pads my resume. :)