not mean diddly

not mean diddly

To not mean or be worth anything at all. I don't understand the first thing about computers, so these instructions don't mean diddly to me. Unless you give me something in writing, the promise of a pay raise doesn't mean diddly.
See also: diddly, mean, not

not mean diddly

AMERICAN, INFORMAL
If something does not mean diddly, it is completely unimportant. I have been playing this game for a long time and I know that one shot doesn't mean diddly.
See also: diddly, mean, not