我没哭只是眼睛进沙
[wŏ méi kū zhĭ shì yăn jīng jìn shā]
'I didn't cry, just got sand in my eyes' is an idiom used humorously when one tries to hide crying. People usually use this phrase to cover the embarrassment while admitting the pain in disguise. Here the user wants to appear strong but actually might be vulnerable or sad inside.