ejaculating while penetrated
When a male or futanari ejaculates while being anally (or vaginally, in the case of futanari) penetrated by either an object or a body part.
It should not be confused for when a female ejaculates, in which case female ejaculation should be used instead.
The following tags are aliased to this tag: cum_while_penetrated (learn more).
This tag implicates ejaculation (learn more).