m' Share definition Flag it means I'm because if you pronounce m' it just the same as I'm but in a lazy or slang way this is uncommon so not a lot of people know. mom: how's school today? you seemed a bit off.. karen: m' just tired and stressed m' by bitchgirl108 October 24, 2020 0 0 Get merch Get the m' mug. Buy Now — $32.95 See more merch