stimulation
hmmm.. well then you haven't really lived..
I have seen a whole new level of extended orgasm.. its fun and doesn't have to be scarry..
back door basics.. don't let anyone go there without plenty of good water based lube.. and not your run of the mill astroglyde or ky either.. it dries up and since you don't self mosten in that area... the more lube the better.. to a degree.. And remember no hard shap things or long nails.. your inner lining in that area is really thin and tearing is an issue.. see
www.sex-work.org for some basics under safety > anal play
fyi - I always say the best way to see if a woman has orgasmed is whether her back door parts constrict and shiver..