Mystery pair of panties in my house

Cliff's version: wife found a pair of panties in our dryer that weren't hers and didn't say anything. I found them assuming they were hers and said something and she told me they aren't hers. She is unconcerned about mystery panties. I'm concerned I'm gonna get stabbed

Ok so obviously I'm taking a risk of sullying my reputation as a poster by posting this here but a nearly unexplainable chain of events have occurred in my household and I need tOT to explain to me just how many Jody's my wife is banging

We live out in the country with no trash service so we burn most of our paper/cardboard trash to save making trips to the dump. We have a bucket in our garage we throw the stuff to be burned into and a couple weeks ago I carried it out to the barrel to burn it and I find a pair of panties in the bucket. I honestly didn't think much of it I just figured they were a worn out pair of Mrs. Wishin's or a a pair she was tired of or something and threw them in the burning barrel. We don't typically burn clothes but it's a thin pair of panties what the hell I reckoned. As I was finishing up burning everything I sort of amused myself bc I thought well if I ever had an affair and the chick left some panties or something I guess I could burn them to like destroy the evidence
Or whatever.

Just a stupid thought but thought to myself I'll have to tell Mrs. Wishn that by burning her old panties she gave me an idea on how to cover up an affair. Well I didn't remember to tell her this until tonight and when I did she said she had forgotten about them but actually they weren't her panties and she didn't know where they came from

When I asked her why she didn't say something she said she "trusts her husband" and didn't worry about it

Now, to be clear, I have not touched another woman during our entire marriage and with a 3 year old and a one year old we are very time limited.

But what the hell is the deal with Mrs. Wishin's response? What woman reacts that way when finding a pair of panties in the dryer that aren't hers? What possible explanation could there be for this? As I was baffled by the whole thing she seemed confused why I cared so much about where they came from. I said bc it brings me under suspicion and it's inexplicable where they could've came from.

She still didn't seem to get it and I asked her if she was messing with me and she said she wasn't which honestly she's not really the type to pull that type of joke

I'm at a loss. I've been around tOT for awhile and know that obviously she's banging somebody that isn't me and they are PIIHB and may even be multiple BBC's involved but even with all of that this is still a completely baffling situation

Is she gonna stab me in my sleep? What's going on here? I almost wish I had been banging someone cause at least I'd know where they came from

Anyways, I'm at your mercy OT. Do your worst