I have invented a dialogue between two brothers for my students (about household chores) and used the idiom "a piece of cake" (I'm afraid not properly). Could you correct the dialogue?
– Dave, what do you choose – cleaning the hamster cage or walking Hunter?
– I’d rather walk Hunter. Could you clean the cage?
– You always choose a piece of cake!
If I were a native speaker of English, I would never shut up. :-)
'You always choose the easier job. Walking Hunter's a piece of cake.'