Similar to terms like "anywhore" or "Anyhoe" It is a play on words of the term "at any rape". Used when you have strayed from the original subject matter. In no way endorsing or condoning the act of rape, just used to make terms more sexual.
"She kept me up all night with her whining and crying, at any rape, it was a long night."
Ani-rape is when one said person forces another to watch anime against they will
johnny please stop showing me anime its not for me
johnny: no you have to *sits on you and forces phone in face*
no stop thats ani-rape