If you’re not looking to get high around Conan O’Brien, don’t tell him you’ve never imbibed a pot brownie. That’s what Larry King found out the hard way after he explained to the “Conan” host why he never smoked marijuana after he quick smoking cigarettes in the 1980s.

The resulting consumption of a pot brownie isn’t as dramatic as you might expect, but King does end up singing (rare) and O’Brien does his own song-and-dance routine (not so rare). Let’s hope they don’t get in trouble for consuming marijuana on national television — and that we don’t find out that this actually was a regular brownie.