Ladies, what makes for great pussy lapping?

Since Jasmine28 was thoughtful enough to ask what makes a BJ memorable, I would like the ladies to respond to "What make a good pussy eating memorable?"

 

truthfully, I've only had two rounds of receiving oral sex that were memorable... and one not for a good reason (he sighed and looked up at me and said "you haven't cum yet" in a very annoyed voice... needless to say I didn't orgasm that time)

The other time was the first time I ended up having sex with a guy.. he was trying to convince me to stay long enough for us to fuck (I had to work early the next day and it was already crazy late)... he grabbed me and pushed me down onto his futon (classy I know), lifted up my skirt yanked down my panties and put his mouth up against my pussy.... ummm good stuff. Didn't orgasm that time either though.

I think, the guys who have managed to get me off through oral, I've stayed with long enough to get spoiled by their oral skills and just not have any one time with them stand out distinctively, just ended up with fond memories of bedroom romps :X

 

The element of surprise.