Ronin, I have 2 things you could try.... one or the other.... one (the true gentlemans way) or 2 (the dr. thumbs remedy way)
ok.. now here goes!
1. First make sure your balls are completely shaven, completely bald, and then trim your other hairs pretty short, but not as short as it is prickly and hurts her, then get her to give you head and see how much more she enjoys it as being a mexican hairless..... if you have not done this already of course.... now my favorite......
2. When you have her in bondage all tied up start playing around with her.... you are kissing her legs and inner thighs and everywhere so softly. you tease her some around her cho cha and then finally start eatin her out.... eventually as we all know this leads to some fingering action... so while you are finger bangin her, start to get a little softer so that she is really really really comfortable and wet and loving it.... now that she is dripping wet, get some of this fluid on mr. thumb.... and play around a little bit, when you see that she has her eyes closed and is just about in clit heaven, thats when you take your nicely lubricated thumb and SHOVE THAT MOTHERFUCKER SO FAR UP HER ASS THAT YOU ARE TICKLING HER MADULA ABLONGADA.... AND I MEAN RAM THAT SHIT!!! PEOPLES THUMB ! PEOPLES THUMB! now as she is begging for anal mercy make her scream, "I love the peoples thumb, I love the peoples thumb!!!" and then say to her, "thats right bitch, now are you going to shave your jungle or does lefty need to get involved in this party too?" where she then will give in to end the burning....... she will think that regrowth itch is like a massage from now on out!
Hope my services, free of charge, have been helpful to you,
Dr. Thumbs
Peoples Thumb Ltd. (TM)
Thumby USA