Ass to the wall~
Meaning: Sleeping with your ass against the wall to prevent penetration from any unwanted entry into your anus. Mostly for all the women that sleep in the NUDE and could be used while sleeping~
Example: This stunning wife sleeps with her Ass tot he wall, but it would be better if she changed the bed layout so she can sleep the proper way! She can also wear Undies or sleep with an Anal toys inserted, maybe the smallest size?