I noticed that girl in the Megabrothel program talking about a numbing ointment she used on busy days and thought "HOLY HELL I NEED TO GET SOME OF THAT!" It took me a while to track down what it was and where to get it, but I went into Boots today and picked up a tube of 5% lidocaine ointment.
Now, I should say that I did a fair amount of reading about this to make sure that it's OK to use. Apparently, this ointment is used by women who have vaginal pain due to surgery, people with haemorrhoids, and nursing mothers with sore nipples. So, it shouldn't be dangerous for use on mucous membranes and doctors aren't afraid to let a nursing infant get traces of it with their breastmilk. From my experience, telling the chemist that you want the stuff for "pain during sexual intercourse" will be met with a "nope." I'm not going to tell you what to tell the chemist.
I'm not going to give actual medical advice or say "you should use this stuff!" You'd want to read the instructions carefully and use common sense. Utterly numbing your rectum so that some guy can pound away back there strikes me as a bad idea.
Right now I am testing it on my nipples. I went braless all last week when I took the week off and my nipples are sore in that way they can get when you go running without a proper sports bra. I'll be having a shower before my booking tonight and I'm hoping that this will make my nipples a little less irritable. I'm also hoping that - having given it a good hour to "soak in" and take effect - it can be rinsed off and not transfer to anyone's mouth.