There's a thread in Meta from a fairly high rank who was busted for copy and pasting and started coming out with excuses about his family been ill and stuff. Can't find it but I think it was made this year.
'I was just drunk, forgive me'
Admins, dear, I beg you to forgive me, for me it is very important!
There were New Year's holidays, I was not sober, I did not realize what I had done!
That one actually works from time to time, depending on what the person was banned for. Not saying that anyone should give it a shot, but a one time mistake caused by the heat of the moment such as saying something that went over the line in an argument. Or while drunk, is a bit more forgivable if you are able to take a step back and apologize the next day.
Being drunk might be an excuse for making a shitpost or being an arse out of character, but I'm not sure I'd accept it as an excuse for copy and pasting, and I'm sure this was just a fabricated excuse he chose to use. It's not going to get you unbanned either way.