Are you serious??!!?? This is just about the worst dental advice ever. ALWAYS rinse, and rinse thoroughly, after you brush. Every dentist I know says not rinsing is one of the worst mistakes people make with their dental hygiene. We've just loosened the food debris, plaque, and bacteria from our teeth by brushing and…

Really? Is this what you've sunk to, Adam? Spreading uncorroborated medical/dental advice from Reddit? Seriously? Apparently, you didn't even bother to read any of the follow-on comments in this reddit post, especially the ones linking to articles discussing why this is rather bad advice.

http://www.livestrong.com/article/133760-side-effects-fluoride/

This is disturbing.. you aren't supposed to ingest fluoride. It is a poison, and is known for causing dental fluorosis, neural degeneration, and bone cancer.