A few recommendations for tarrat 70 and his girlfriend and anyone, who is thinking about this...now or in the future.
Lubrication, lubrication, lubrication! Try different ones, and by all means, different positions. (To be discussed later).
Do not forget the Percocets -- she should be stoned (but feeling nicely: peacefully and calmly) when taking a cock that large!
If a man is a large man, heavy in the weight department (not stomach), you might want him to straddle his weight, using his elbows -- that is what I request, until I am comfortable with taking all of his weight, and his enormous cock, as mentioned above.
Thank goodness I have a queen-size, hard, Tempurpedic mattress (this is not an endorsement -- just my choice of mattress).
Sometimes, I like the scissor position: you can somewhat control his cock insertion by placing your hands on/around his cock, indicating to him -- how much you want to penetrate: if you attempt to pull his cock out -- he will immediately know (or if he is caring)....that it hurts: let you rest, catch your breath, and continue....little by little.
By all means -- avoid over-the-shoulders fucking -- too much depth penetration for me, only if the man is less endowed. In that position, most men will thrust hard(er) and attempt to penetrate you deeper, and in addition, you have less control.
Remember, you always want to be in control, as much as possible, and I do not mean dominance!
If you have meaty thighs, your thighs will act as a buffer, a softener for his cock, too. Sometimes, doggy-style is painful, depending upon how the woman is built. Some women absolutely adore it!
Avoid straddling him, at first: you will not be quite as open to receive him -- stretched enough for that position.
Now, my favorite lubricates are WET and ASTROGLIDE. KY dries up so quickly for the woman and man. In fact, a male partner told me to get rid of KY -- it dried him up.
I hope these tips helped, and to be honest, I wish I had a birthday present like that. My birthday was Monday, March 12, and unfortunately, I did not have sex. However, having told my lovers, they are going to oblige me, belatedly, by honoring my request with thick cocks this weekend and possibly next week.
Episcopalian