godan verb (-ru), intransitive verb
behave perversely; sexually assault a woman
Rare verb derived from 出歯亀 (a notorious voyeur and rapist in early 20th-century Japan). Used for sexually predatory behavior, especially voyeurism or assault. Not part of everyday vocabulary.
See also: 出歯亀
The verb 出歯る is a slang term that originated from the 出歯亀 incident.