Texas Trashcan

Just after a woman pinches one off, and before a shower, she lets you take her from behind. As an act of gesture as you approach, she lifts up one of her cheeks to help you. However, after lifting her cheek, you are overcome with the awful remnants of her previous activity. You have just experienced her texas trashcan.

My girl did not tell me she had just taken a dump and told me she wanted me from behind. As I approached my landing from behind, she lifted her texas trashcan lid and I chipped a tooth.