No, you cannot carbonate with nitrogen as it doesn't dissolve in water/alcohol. You could use beer gas on root beer and pour it with a stout faucet.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk