麻麻说我素好孩纸
[má má shuō wŏ sù hăo hái zhĭ]
A childishly expressed phrase, meaning 'Mom says I'm a good kid'. Here '麻麻'(Mama), '说'(says), '我'(I), '素'(is, internet slang) and '孩纸'(kid, also an internet slang instead of '孩子') are used cutely. It reflects a playful, innocent personality or role-play.