The sweet moment of no return when the underwear is pulled down and off. What she will find inside will not be a surprise.
I like the newer action gifs. She is shown giving only one lick - looped again and again, but she puts a lot into it. I would not be able to stay in position for licks coming this quickly. But do like a hard paddling. Hopefully some HD quality gifs will make an appearance. This one looks to be from Nu-West. They were never much into set design.
PS, Bacall did this to me yesterday.