can is can phrase2 •(Singapore, Singlish) While something is possible or makes sense in theory, it may not be as straightforward or sensible as initially thought, or may prove to be less successful in practice.How about turning one man’s trash into another man’s treasure? Well, can is can. — 2021 •(Singapore, Singlish) Used to reassure someone that something is definitely possible or doable, by reinforcing the definitiveness of a previous statement of can.