Oz, your friend couldn't speak properly, it should be pronounced "mingis". With an 'i'.

There wis a young lassie named Menzies,
That asked her aunt whit this thenzies.
Said her aunt wi a gasp,
"Ma dear, it's a wasp,
An you're haudin the end whaur the stenzies!"
Which reminds me of a limerick about my home town:
There was a young curate from Salisbury
Whose manners were quite halisbury-scalisbury
He went down to Hampshire
But got ants in his pampshire
And now he's the Vicar of Walisbury.