M'cream Share definition Flag A "unique" way to greet someone after surprising them. It's better to say "Sup! M'cream!"M'cream is just meant "bubby" but more "unique". Person A : "Sup! M'cream!" Person But : "HOW DID YOU GET IN MY HOUSE" M'cream by Sayo_Murai March 31, 2022 Get the M'cream mug.