Sweet Mary...

futanari, anatomical errors (extra hands,extra fingers,extra limbs), strangely contorted or warped bodies, body parts in the wrong locations, body parts bent in unnatural ways and angles, shrinking breasts, breasts falling, sliding and/or melting off, breasts changing size or shape, tentacles, penis tentacles, tentacles forming from bodies or from nowhere, gaps in solid objects such as penises, stretching penis, disembodied penis, removed penis, characters speaking over each other or mouthing each other's dialogue, boy wearing fur coat