This is something that Yorkshire men say when they can;t be bothered explaining something or when they give up a conversation half way through. Especially common with people born and raised in Bramley.
'So I'll explain to you why what you did was wrong.'
'Okay, so tell me'
'Well you said, oh it dunt mata'
'Okay, so tell me'
'Well you said, oh it dunt mata'
by John Mirfield February 21, 2012
 Get the It dunt matamug.
Get the It dunt matamug.