This might not be the best be the best board to put it on, but I don't know where it'd fit.
How drunk do you have to be to not remember something? If you're passed out and difficult to wake, is it likely you remember?
A little over a week ago, my neighbor reported my grandfather missing. His truck had been missing for two days, and there was no answer at the door. Because I'm the only one who lives in the area, I went over there, let myself in (I have a key) and found him. I thought he was dead at first; he didn't respond to repeated screaming of his name or the fact that his tv volume was unbearably loud. When the neighbor, who's a nurse, took his pulse (it took her a minute or so to find it), he didn't wake up. It was only when I grabbed his arm that he finally woke up, completely clueless to why people were there and definitely annoyed about it. The EMS had all ready been called, so they came in and made him talk to them for a bit before they left. He was very unhappy and angry that he had been woken when he was "acting normally" - all he wanted was to be left alone and go back to sleep. He told them that I was his daughter (I'm his granddaughter, and he's never had a daughter, unless you count in-laws; actually, now that I think about it, it's quite possible that he thought I was my mother). I didn't really say goodbye; I let the EMS out, talked to the police, locked the door up, and left. I'm pretty sure he had passed out again before I left.
How likely would it be that he remembered any of it?
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"Nothing worth having is easy."
Three years!