Steps to achieve the Santas Magical Sack

1. purchase a santa costume

2.purchase a large red sack (one the could fit a large dog into it)

3. cut a hole in the sack the size of a tennis ball

4. have your santa costume on while doing your girlfriend doggystyle

5. quickly withdraw and forcefully stuff her into the large sack where you continue to have sex with her through the hole you cut out