Sarah: Did I miss something?

Today while teaching viola lessons, I had a student make a special request:

Student: This December, can I play a Christmas song, for, like, Christmas?
Me: Sure, did you have something specific in mind?
Student: No. I dunno. Just something that would be awesome to my possum.

The preceding conversation was all said with complete sincerity. Am I completely out of the loop? Is the phrase involving awesome and possum cool? I assume that the "possum" in question is the kind of "posse" that happens to rhyme with "awesome." Insights, anyone?