"Maybe disgusting, but maybe something to it...I used a probiotic pill as a suppository today."
Might not be that crazy after all. This University of Maryland School of Medicine website states that "...lactobacillus capsules or tablets may be inserted directly into the vagina." If this is uncommon, but accepted practice, then insertion would certainly apply to one's cornhole as well since both organs are susceptible to similar yeast overgrowth.