Why how lucky are you that this the exact area of my expertise ? I know periods better than my own wife..that's pretty well.
First of all you have 'perioda lactasa' more common to the feline species but unfortunately can occur in the human female. It is extremely rare in humans ..last case study … Read more

You're description sounds a lot like the anal cavity of the dog.
For the dogs sake I will have to ask you to stop feeling the dogs anus.
Thank you.

1
2
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6
19
57
19 and 57 are prime.
I'm a maths professor at harvard btw.