Ayuh (never 'Ayup').Bingo... That's what we heard at the little store on Swan's Island. I missed it. ''Porchin' season'' is coming a few weeks.
Which by the way; 'Ayuh' is heard through your nose - as you're inhaling, through your mouth.
Usually it's done 3 times fast. "Ayuh-ayuh-ayuh", as you take a breath.
This is all according to a good friend who is a native Mainer (not Southern Maine, which is not considered Maine by natives in this area).