Use 'stuff it' in casual settings, not formal situations or with higher-ups.

Informal Context

'Stuff it' often shows you're annoyed and don't want to continue with something.

Conveys Frustration

Saying 'stuff it' can imply you're giving up or walking away from a frustrating situation.

Refers to physically filling up a space or container with items.

Implies using force to make something fit into a tight space.

'Stuff it' can hint at a quick, makeshift way to pack something away.