Mouth. I really love the sensation of my partner sucking my balls empty until the last drop and then even further maybe.

She loves it too, and is a master of deepthroating.

When she notices I'm close, she stops a bit and just keeps on swallowing with less sensation than before, but balls deep in her only a snake could compete. This prolongs it a bit, and she can enjoy some precum as long as we both can.

The taste of it (sweet and fruity according to her) drives her crazy, and often she just edges me for another couple minutes, until I just can't hold it no more and let it happen, either until she can't keep up anymore with swallowing, or until it becomes painful.

Vaginal on the other hand, good too, but we use condoms and as soon as I cum in her I have to pull out, because my dick becomes flaccid and the risks become too high.

Don't get me wrong, the vaginal cramping sensation when she cums is just as good, but not as controlled and manageable.

Pussy. I am going to have to give that asshole of hers a good hard pounding first though. Something irresistible about those deep guttural grunts as I plow it, then there'll have to be a brief pause for me to clean up before I fold those legs back and go at her pussy like a jackhammer until I'm creampieing that pussy as she cums so hard around my cock

the thought of cumming in her ass and my semen splashing her rectum makes me very hard

Pussy

Honestly, mormaly I would choose ass, because it is just more conveniently located...but today, I'd go mouth, because I want to feel what it is like to be sucked weak

I know she really hates getting cum in her mouth, so I would never force her to do that under any circumstances.

The ass would be an excellent choice, unusual enough to mark the occasion.

Pussy and then I lick the cum while I pleasure her. I hope it doesn't sound gross.

Always pussy. We can start anywhere. But it's always ending in the pussy. I didn't get a vasectomy for nothing.

I have a bit of a fetish of starting in the pussy and then ending in the mouth.