lighten your shit Share definition Flag means you need to tone things down a bit and not make such a fuss or scene. Brah, you need to lighten your shit a little. Cut down on the antics cos nobody needs to know where you masturbate. lighten your shit by de-pube March 10, 2022 0 0 Get merch Get the lighten your shit mug. Buy Now — $32.95 See more merch