Ha! Found it! Thank you, lotrboys_daily and bagendinn! It's the image I referred to ages ago of Dom and Billy encountering photorealistic Merry/Pippin slash. (image originally from Theban Band, which is bad and wrong but also hilarious. NOT WORK-SAFE. Or parent-safe, for that matter.)

Those poor, poor boys. XD

I can just imagine Dom saying "I don't remember doing that!" (or worse, "But I thought the camera was off!")

(From the Wellington TTT premiere)