have your cake and eat it (too)

US /hæv jʊər keɪk ænd iːt ɪt tuː/
UK /hæv jʊər keɪk ænd iːt ɪt tuː/
"have your cake and eat it (too)" picture
1.

hem pastan dursun hem karnın doysun, her şeyi istemek

to want or try to do two things that are impossible to do at the same time

:
You can't have your cake and eat it too; you need to choose between your career and your hobby.
Hem pastan dursun hem karnın doysun olmaz; kariyerinle hobin arasında seçim yapmalısın.
She wants to work full-time and also travel the world, but she can't have her cake and eat it too.
Hem tam zamanlı çalışmak hem de dünyayı gezmek istiyor ama hem pastan dursun hem karnın doysun olmaz.