I'm going to tease my wife about finally catching her shitting
What exactly are you going to say to her?
I'll tell her that her anal muscles loosened and she shitted on the shower floor
That's an awful thing to say, it's not okay to tease your wife in a rude way. You should be more loving toward your wife.
She did the same to me.
That was crude and wrong of her to do, just as it will be crude and wrong of you to do this to her now. So don't do it.