There's no chance I'd teach it to my English students, and neither would the other teachers here. It's too irregular an irregular. It would confuse them to no end, just as teaching them any other kind of redundant slang would. They can get by perfectly well with have and got.Heartcafe said:Hmmm. It's a real word according to the Merriam-Webster dictionary.
http://www.merriam-webster.com/dictionary/gotten
Incidentally, the amount of American rage in this thread is both hilarious and exasperating. Only an idiot would feel roused to anger by this list.