When my wife gave me a good BJ one night, I asked her to tickle my butt hole. It was a wonderful sensation. She eventually, with a little lube, managed to insert her finger and rotate it round just inside. WOW I came very quickly after that.
I have never been switched on with anyone playing with my nipples, either male or female. But my wife likes her boobs played with and her nipples kissed and lightly ticked. This sometimes send her into raptures.
When my wife is able to have sex with me, she always likes me to cum inside her as she likes the sensation of warm cum in her pussy and then the cream pie trickling between her but cheeks. She thinks shooting on her tots is dirty as she has to clean off.