Leave it to Seth Rogen to out his friends and colleagues as potheads -- or not. (Via bravotv.com)

4:20 Digest: Celebrity stoners outed by Seth Rogen and more (3-18-14)

It’s 4:20 p.m. on March 18, 2014, and here are a few of the things we’re talking about at Cannabist HQ.

SETH ROGEN’S A STONER, JAMES FRANCO ISN’T. Did Seth Rogen know he’d be asked to out his celebrity stoner pals when he appeared on Bravo’s “Watch What Happens Live” last week? He certainly seemed game as he counted down his colleagues who toke — and those who don’t. See the video.

99-CENT POT PIPE: GENIUS OR TRASH? Our gear critic has reviewed $700 vaporizers, and “borosilicate is definitely the religion I was raised on.” So how did he feel when faced with a 99-cent pot pipe? “It is marvelously unsophisticated, and it costs 99 cents.” Read the rest and see videos of the aluminum pipe in action.

Catch up on the news: Our 4:20 Digest archives are right here

“WEED AND SPORTS AREN’T FOR EVERYONE.” Our Weed Sport columnist took on Austin’s Town Lake in a kayak while breaking from the mania of the South by Southwest music festival for this week’s trip, where he learned that smoking weed while partaking in athletic exercise isn’t for everyone. Check it.

IMPORTANCE OF PRIVACY IN RECREATIONAL MARIJUANA. Whereas medical marijuana patients have to apply with the state for a license and show that license and another state ID everytime they make a purchase, recreational buyers need only prove they’re 21 with a quick flash of a driver’s license or passport. And that’s the way many customers like it: “We have so many violations of privacy in our lives already,” one customer said. “We don’t have a Fourth Amendment anymore. So anytime you have a chance to exercise that right, it’s a good feeling.” Read the full story.