The man who offered the president some weed posted video on Instagram to document his story. The presidential motorcade also passed two people holding up signs offering Obama free marijuana but did not stop.
Obama and Hickenlooper played pool in a bar the governor once owned. Obama also turned down a man who offered to buy him a beer, saying "It's too late. I just had one."
The president has admitted he used drugs in his youth and in high school belonged to a "Choom Gang" known for its study of how best to get high. As he put it earlier this year, he made "bad choices."
In the bar, Obama shared a hug with Kalynne May Arrick, whose brother, Marine Sgt. Kenneth May, was killed in Afghanistan. He presented Arrick with a challenge coin, a coin designed to show membership in a military unit or other organization.
During his evening out, Obama also ate at a pizzeria with several people who had written him letters and shook hands with a man wearing a horse's head mask during a walkabout.