Last pair i got in the post i used to wipe my cum up with and returned them to the sender who then wore them to work
Lovely little black G string very nice
"What would you say is the best thing to do with a pair of dirty knickers? And not wash them lol..."
Sell them. If you are just gonna throw them out you might as well make some cash. And no I'm not into panty sniffing it just makes economic sense lol