说不定是马里奥吃了奥利奥
[shuō bù dìng shì mă lĭ ào chī le ào lì ào]
This nickname combines the popular Nintendo video game character 'Mario' with 'Oreo,' a well-known cookie brand. The playful name suggests an uncertain event, implying that the user might just as likely be Mario eating Oreo, reflecting a whimsical and fun-loving personality.