I ejaculate into my sister's panties and then I put them back in her drawer.
I get really hard over my sister's soft panties. I really need her panties to have a good orgasm. They feel so good rubbed against my rod. It's so exciting when I might get caught. It feels more intense when she or mom is home. I keep my ejaculation inside her panties so it doesn't stain the pretty outside. I always fold them up neatly and put them back in her drawer just the way I found them. She doesn't know.