someone's eyes are bigger than their stomach

US /ˈsʌm.wʌnz aɪz ɑːr ˈbɪɡ.ər ðæn ðer ˈstʌm.ək/
UK /ˈsʌm.wʌnz aɪz ɑːr ˈbɪɡ.ər ðæn ðer ˈstʌm.ək/
"someone's eyes are bigger than their stomach" picture
1.

os olhos são maiores que a barriga, pegar mais comida do que se pode comer

to take more food than one can actually eat

:
He ordered three main courses, but his eyes were bigger than his stomach.
Ele pediu três pratos principais, mas os olhos dele eram maiores que a barriga.
I think my eyes were bigger than my stomach when I filled my plate at the buffet.
Acho que meus olhos eram maiores que a barriga quando enchi meu prato no buffet.