When you're about to tongue an ass, say to yourself, over and over, "I have an open mind, I have an open mind, I have an open mind." And maybe it will be nicer than you think.
Do I like it? The only thing I like better is to hold my dark star up to her mouth and get rid of the methane build-up right then and there. Inevitably they will come back later and tell me that they could not get that taste out of there mouth for the rest of the day.
i've done it and had it done, very much fun but i have to be in the mood, and freshly cleaned is always a bonus