Rub your nub...

You quickly walk into the bathroom and drop your pants, your little cock hard in your panties... The feeling of having been walking around in them, your cockhead rubbing against the smooth material has been pushing you over the edge all day, add in Sam's body on display and it doesn't take much convincing that this is the way to go...

You sit on the toilet and begin to rub your cock through your panties, two fingers grinding against it like an oversized clit...

Little whimpers escape your lips as a small knock can barely be registered by your ears...

You don't notice as the door begins to open...