like butter on a bald monkey

like a duck takes to water

Very naturally; without effort.

like water off a duck's back

Without immediate or lasting effects.

like that

Gay; homosexual.

like one's life depended on it

Desperately.

like a chicken with the pip

In a weakened, confused, or sickly manner.

like cheese at fourpence

Of a person: waiting idly or timewasting.