irrumatio
A type of oral sexual intercourse performed by someone actively thrusting their penis into their partner's mouth and possibly their throat.
The distinction between fellatio and irrumatio is based on who is actively moving: irrumatio means to thrust the penis into the partner's mouth, while fellatio means to move the head and mouth up-and-down around the penis.
See also
The following tags are aliased to this tag: face_fucking, facefuck, forced_blowjob, and forced_fellatio (learn more).
This tag implicates fellatio (learn more).