means deep complete initial entry without hesitation

especially for cocks of a larger size. I personally need to play back there, relax the muscles, and ease the cock in SLOWLY with plenty of lube. If I don't, ouch!

I used to have Anal: Yes on my profile, but after a few guys expected me to pop it in with no finesse, I took it off and now I only offer it on a YMMV basis. These were guys with large cocks, btw. I can handle a quick, forceful entry if the cock is pretty small.

I've heard of some ladies who can just pop it in, maybe they have learned to work through that VERY painful moment before the muscles relax, or maybe through years of doing anal, their muscles have been trained. Or, maybe they're in pain, but faking really well. The lady who taught me to do anal, a former doubles partner and legendary PSE provider, told me the following trick: pinch yourself while he is in your butt, and the pain diversion will make it hurt less. She might be perfect for the OP, I'd be surprised if someone hasn't already suggested her. She used to brag that she could take any cock back there.

Not trying to be offensive, just want to correct any misconceptions. What the OP is looking for is truly unusual, and would be rare enough to be considered "best greek EVER." My respect goes to the ladies who can handle that.