Serafina: Nice large black cotton thongs

I like thongs! Most of my knickers are thongs so I'm selling some off to buy more! These are great quality ones from a well-known department store and that I will wear for three days for you - and I have a busy, physical job too, on my feet all day, running around, as well as going to the gym, so they will be nice and smelly! As you can see they're right up my crack and I don't shave...