Veggie Carols and Crazy Carols

A space module escapes Earth at Christmas time, landing upon an alien world. Behold! There are creatures singing the same tunes from back home! While listening more closely, the Earthlings notice some words being different from the familiar carol words. And the aliens seem to be eating fruit and veggies with lots of gusto! This leads the Earthlings to join the singing with great abandon, as aliens cook and bake in the outer world kitchen. Mostly, the aliens are just having a good time giving the tunes rowdy meaning.
Then the aliens sing other holiday tunes, with even more curious adventures and words. Earthlings are fascinated by hearing things such as: teens missing their curfew, getting braces, pigging out at Christmas, seeing the spread of the fast food industry, and watching recent political events on Earth. This amazed the Earthlings to hear such things in their holiday tunes. Finally, they decide the aliens really knew how to have a good time!