That's something you might not want to post on Facebook.
The online message said the pot dealer would be in a store parking lot in a black and silver Ford Taurus for anyone who wanted to buy.
Police in Bemidji, Minnesota, went looking for the pot dealer.
But a local paper reports officers didn't find anyone.
The pot sale notice was posted on a community for-sale page.
The man who set up the page says police asked that the marijuana listing be left up, so officers could try to catch the dealer.