Accidentally came in my sister’s mouth. By that I mean I was jerking off to her while she was sleeping (she’s a deep sleeper, and usually just sleeps on a tshirt and panties).
Couldn’t hold it and came, and a bit went into her mouth. The next morning she said some bug must’ve gotten into her mouth, because it tasted weird.
My life flashed before my eyes that moment.

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Source: 4chan