Marijuana went on sale in Colorado on January 1, following its legalization way back in 2013. Residents were very excited and a ton lined up outside marijuana dispensaries, ready to try this new 'weed' thing that they had heard so much about but probably never tried before.

Here's what it looked like.

(AP)

Employees David Marlow, right, and Chris Broussard work behind sales counter inside Medicine Man marijuana retail store.

AP

That guy in the Harley sweatshirt looks very ready to buy weed.

AP

Thumbs up!

AP

Some revelers threw a Prohibition-themed New Year's party, because like marijuana, alcohol was once illegal but is now legal.

Reuters

Do you think they want weed?

Reuters

A discerning marijuana customer takes stock of his options.

Reuters

47? More like: 420!

AP

Two men wearing what appear to be Guy Fawkes masks celebrate being the first to ever log on to 4chan while high.

AP

Uh oh. Don't look now buy I think one of these guys is a federal officer. Marijuana is still illegal under federal law, so be careful!