maaaaaan
The loud whine of a person who's too tired to even bother. It's like they're saying 'I don't want to do this and I'm not going to hide it.'
Maaaaaan I can't do this I just got out of bed and I'm still half-dead
Maaaaaan I'm not doing this I'm going to sit here and eat a whole bag of cookies
Maaaaaan why do I have to do this I just want to play video games and be happy