My spunk was on her panties
Probably going to get slaughtered for this, but when my 18 year old step daughter was still living at home.
I once went into her panties draw and pulling out a pair of her knickers.
I wanked myself off until I came just a little.
Then I rubbed cock onto the crotch part of her panties.
Then put them back into the draw.
Really turned me on, knowing that when she put these panties on, a small amount of my seamen wound be against her fanny!!