The most erotic thing that can happen to me is to wake up while someone is sucking on my cock. It starts as a dream, a velvety mouth sliding up-and-down my erect prick while a tongue gently caresses the knob at the end. A soft hand massaging and fondling my balls while a finger carefully outlines and probes at my ass hole. I usually wake up just moments before I climax and spew great wads of my cum everywhere, but mostly in her mouth.
My wife laughs at this and says it is great fun to suck on my soft cock while I am sleeping. She enjoys feeling it grow until she can only get about half of it in her mouth. She gets a big kick out of this because I moan and thrash wildly just before I wake up and cum. This usually happens two or three times a month.
Because of our increased sexual activity in recent years we have both taken to sleeping in the nude. Even around the house we wear a minimum of clothes.
I like to get even with her but she is such a light sleeper I must plot it with a shrewdness of a bank robber planning a heist. I usually start by taking a nap the day before so I can wake up before her early in the morning. I must stealthily creep out of bed and go for my shower and shave. Shaving is an absolute must because her skin is very tender and I cause whisker burn between her thighs if I have any stubble at all. Even the aroma of my after shave will waken her.