skull imprint
The distinct impression of a skull bulging through an opaque membrane.
While a skull imprint could appear under other circumstances, this tag is almost always applied in a vore context, where the digested remains of prey are visibly imprinted on the surface (typically bulging throug the abdomen or scrotum) of the predator character's body.
If a skull imprint is visible in a vore context, it should be tagged as fatal vore, and usually also tagged as after vore (barring another character being still alive within the predator character's body, or in the process of being consumed).