Trump's daily virus press briefing had a hilarious moment Monday at the Rose Garden ... courtesy of Mother Nature, coronavirus testing kits and DT's famous mane.

Ya gotta see the video ... Trump's touting the new FDA-approved 5-minute coronavirus test when a gust of wind sends the test box flying off the podium, and his hair starts flowing in the breeze.

Trump notices the box blowing away, instantly makes a comment, then praises himself and his locks.

The good news ... it seems he's finally getting on roughly the same page as Dr. Fauci.  Trump stressed the need for self-quarantining during the next 30 days. He said private companies are working on developing and manufacturing new tests, respirators and he said a company is working on sterilizing protective masks so they can be reused 20 times.

But, do you actually believe Trump when he says it's real?!?