If you had your underwear on and she had nothing on and you pre-ejaculated in underwear could she get pregnant?
Your sperm would not survive in the fabric.
Is this normal found a pair of your underwear in your younger brothers room with cum stains on them I know boys have fantasies with panties but is this normal to masturbate to your sister's underwear?
If it was normal, then your brother would have his OWN pair of underwear, not panties, but still.
What underwear are you wearing?
ThongBlack, laceyVictoria's Secret