m dog - A nickname for Maisy, but only if you're really petty and th

A nickname for Maisy, but only if you're really petty and think it's funny to call a girl a guy.

'You're an M dog now. I'm gonna make you wear a suit and eat breakfast food.'

'I'm not calling you Maisy. You're an M dog and I'm not nice.'

'M dog? That's the best you could come up with? Pathetic.'