My other idea (but similar) is that Bebop and Rocksteady intend to rape Irma and April from the 80's TMNT cartoon, but Irma and April are so horny that they turn the tables on them and fuck Bebop and Rocksteady into tired submission.
(Feel free to change it and make the story darker if that's what you're into.)
http://turtlepedia.wikia.com/wiki/Irma_Langinstein_(1987_TV_series)
Either way, I hope somebody here writes it.