Usually used in sentences
like"Och aye the noo"
or Scottish Rhyming Slang
"Och aye the noo broon coo"
"Och aye Jock McKay"
Or in non descript replies to questions
like"nice day isn'
t it big
man"
"the bairn's are growing up fast"
"fancy a pint"
Its not really used anymore except as a joke term or amongst older Scot's.
Och
like Loch are unpronounceable by Americans and Canadians who say Ock and Lock. (bastardisation of two lovely words) *shivers*
Sometimes a simple "Och aye" will come out with a contented exhale of breath. As in "all is well"