Mysterious French Undergarments

In the process of folding my clean laundry this evening, I discovered a foreign pair of underwear. I had never seen them before. They certainly weren't mine, and they didn't look like Mo's. So how did they get into my laundry basket? "Must've been in the drier," I thought. So I deduced that the underoos of unknown origin must belong to my housemate E. Other female housemate, M, is about my size, and there is no way either of us could squeeze even one of our ass cheeks into those undies. So I meandered across the hall to return the prodigal panties to their rightful owner. E, however, did not recognize them either! After some consideration, we concluded that they must belong to V's girlfriend, who had been visiting from France over the last few weeks.

And this is how I came to have a strange French woman's underwear on my desk.