Didn't see one in the first 6 pages, but then again there's so much spam, who the hell knows anymore.

Source on this one is unknown. It's clearly suehirogari, I believe it's Somuniiru from 0ex Vol 29, but I haven't been able to find a copy.

More pictures here, but they're too hardcore for /e/:

ttp://2d.moe.hm/2d/img/2d21332.jpg
ttp://2d.moe.hm/2d/img/2d21333.jpg
ttp://2d.moe.hm/2d/img/2d21334.jpg
ttp://2d.moe.hm/2d/img/2d21335.jpg