I agree with all the comments above. As a total bottom, I like to be as clean as possible because when I clean for me "it becomes manpussy". As such, I hate mistakes. My biggest problem is getting all the water out. I find that waiting after cleaning happens. I usually finger myself to get the water out and stimulate my prostate prior to playing. As stated, this can cause the upper GI tract to release scat. At this point, a small washing helps.
For me, I always find it hard to know what to do when going on a date. Since, we are eating and may have alcholo. It makes discussion making hard. If, I clean before the date I can irritate the colon. If, I clean before the date when I have to worry about come back later. It can also making cleaning later messy.
Overall, as a total bottom, whenever I go to the restroom. I check. If, I need to reclean I do. Also, cleaning after every natural bowl movement helps. Increase your fiber intake. Take vitamins, etc that increase being regular. Know your top, how is like to fuck, how much does he need to be milked, size, stroke depth, etc. This allows you to relax and reduce mistakes.