Two related uses. Literal: walking in a side-to-side rolling motion (a duck, an overweight person, someone with sore feet). Slang/colloquial — common in Taiwan and northern Mainland: 'cocky, putting on airs' — the metaphorical leap is from 'puffed-up swagger walk' to 'attitude'. 'Very
跩' (
很跩) is the typical adjective form.
