President Barack Obama Laughs Off Weed Offer Puff, Puff, No Pass

7/9/2014 6:13 AM PDT BY TMZ STAFF

When in Denver, do as the Denverites do ... but President Barack Obama drew the line at smoking pot.

Obama was in town Tuesday night and hit up a few "man of the people" type spots.

As Obama shook hands with a few of the bar patrons, one guy yelled out, "Do you want a hit, man?"

Obama -- once a self-admitted pot enthusiast -- laughed it off of course ... but you have to wonder if the answer will be the same in January 2017.