self-insert
verbEtymology From self- + insert.
1
To insert oneself.
- For centuries, the commonest forms of implant had either been grown in situ or were designed to self-insert painlessly via existing orifices […]2000, Alastair Reynolds, Revelation Space:
2
To insert something into one's own body.
- In Oregon, a group called Ceek Women's Health has begun clinical trials for a series of new devices—including […] a speculum that patients can self-insert.2018 October 5, Arielle Pardes, “The Speculum Finally Gets a Modern Redesign”, in Wired:
3
Lifestyle Slang To insert one's own person into a story as a character.
- The character looks like Goldman and is voiced by him, so critics said he was self-inserting himself into a romantic situation with an underage character.2017 June 1, Beth Elderkin, “This Creepy Powerpuff Girls Theory Isn't True, Thank God”, in Gizmodo, archived from the original on 27 Sep 2018: