Oh man Durban, that's funny. You should have asked her if she'd like to join ya. Who knows, maybe she'd discover the beauty of internet pron while you were busy investigating the mystery of morning wood.
In answer to being woken up with the request to suck aforementioned morning wood, yes, that would indeed earn a slap. But being woken up with a little um romantic attention will always earn a little attention right back at cha. It's all about the approach. If I woke up to my significant other snapping one under the sheets, I'd probably take advantage of the situation to finish the job.