Regina goes anal
I think we have a twofer on our hands here. Hairy, TICK! Anal, TICK! Now, we realise hairy beaver isn't everyone's cup of tea, but anal, well, it's clearly the correct hole for sex, any idiot knows that! So it's only natural that, given the chance the lovely Regina would simply leap at the chance to self buggerize her butt. Is that even a word? Maybe not in the Oxford English, but it makes a lot more sense than "frenemies" which is.