Yes, it's such a turn on to use a MILF's panties as a wank glove and then spunk into her panty gusset. I fold them carefully and leave them to dry, ready for use. I love to think of her most intimate piece of clothing enrichened by my male seed.
It doesn't have to be MILFs of course. I once stayed with some old friends for a week's work in Hong Kong. They had two teenage daughters; one was at home, while the younger was away visiting family overseas - I stayed in her room. First evening I rummaged in the laundry bag in the bathroom and found a delightful pair of dark blue hipster panties, lined with white lace. Further inspection revealed that the gusset was damp and stained - the little minx had clearly had a hot time before coming home. I couldn't resist filling then with semen and making sure they were even stickier, ready for the Filipina maid to discover next morning.
Next day, I discovered that one of the drawers in my room was packed with clean and neatly folded pretty cotton panties - pink, blue, white, hearts, flowers, lace, beautiful. Heaven. I indulged myself that week, filing 1-2 a day and carefully folding them back into place. I also managed to add my cum to several more used pairs from the laundry bag - a satin pink thong and a pair of lacy black briefs. Quite a stain that left!
