[Sam's own breath hitched when he felt the other's mouth around his fingers, another low moan escaping him. He didn't know if he should be worried or surprised at how quick they'd gone from brothers to this, to whatever they were now.]

[From brothers to Dean sucking his fingers while he had his own mouth busy over the other.]

[But that seemed to pale in comparison to how hot it was that Dean was sucking on his fingers and to draw it out a little bit longer, Sam slowed his own motions down and drew away almost completely to lap at the other.]