A term used when responding to a "thank you". It is a mixture of "no problem" and "I don't mind", meaning "don't even worry about it, because I'm not. It isn't even an issue."
This can also be used to tell someone they shouldn't worry about something in general.
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Mike: "Yo dude, thanks for giving me a ride downtown. I owe you one."
Joe: "Oh, dude, no mind. It was just great to get out of the house."
No dirty mind intended, or NDMI is used when someone wants to say something that soinfs suspicious but does not intend to make it sound suspicious, it is the opposite word for sinful mind and vicious mind.
Jake:"my sister is so stubburn, no matter how hard i HIT her she still would not obey me."
Sam:"well, you might need to hit her harder. No dirty mind intended THOUGH."