Steve McLaren did it and I know plenty of people who go abroad and either shout at foreign people or indeed just weirdly pick up the accent without the words :)
I can't get my head around it but there it is.
There's a big difference between shouting and the accent.
Shouting is rude, whereas the accent is likely because you're making an attempt to learn the language, or are talking to a lot of locals speaking English and you're reflecting back their speech (either simple because that's what you're hearing all the time, or because you're making it easier for them to understand).