I call fake as well. When DH had surgery on his knee, they were not feeding him crackers when he woke. He was begging for something to drink and they would only give him ice chips, for quite a while. By the time he got food he was wide awake and clear as a bell.
When my DH woke up from surgery, he knew exactly who I was. I walked back there and was crying and he just looked at me and waggled his finger for me to come here - so I came close and he started hardcore making out with me and trying to grope me inappropriately. Then he got angry because his oxygen tube was impending his kissing and took it off. That didn't make the nurses happy so they kicked me out.
This was odd for me because he's never been the publicly affectionate type, and honestly we've never kissed like that in public before.