Discouragement as a result of the fart video would have to be by reputation rather than available visual evidence though. I suspect most people watching the fart video would likely to conclude the ass is actually the cleaner of the available options downstairs, and I don't say that lightly.
Also it occurs to me that given the physics on display for the moobs...I'd bet a single moob could consume a dingus of average size with their lipidic formlessness. Couldn't call that "nipple fucking" though,
first of all, what nipples, but most importantly gravity has too big a role for just any geometry to work...so probably "lampshading" would be a better term to describe this theoretical unholy ritual; any other orientation would just end up looking like a moobslide passing around a phallic rock formation, endlessly seeking that path of least resistance to a flat plane.