Following their much-awaited comeback, A Pink allowed fans to go exclusively behind-the-scenes in the making of "FIVE."

Watch as the girls warm up in the studio fooling around and having a good time, not to mention dancing to Psy's "New Face" in front of the green screen causing much laughter.

SEE ALSO: 'Knowing Brothers' reveals teaser for next week's episode featuring Apink

Check out the funny clip above!