Ah ha! Begging! Sam knew he could do it. He knew he could get Dean to writhe, moan and beg him. It was all just a matter of time! And it was so much more rewarding than prank wars. Of course, the cruel, teasing part of him was tempted to pull away and go get breakfast and leave the poor guy hanging but... well, he wasn't that cruel.
As for the praying? Sam would gladly go down on his knees every night... But lewd jokes aside... he still prayed, on occasion. Not as much as he had before he discovered what jerks most the angels were and that God could be a real selfish dick. But he still prayed. He still had to cling on to something.
Sam rocked his finger against Dean's prostate as he continued to suck him off. His cheeks hollowed out, he hummed around Dean's cock, tongue lapping at him relentlessly.