User behaviour where someone clicks a search result, returns to the SERP almost immediately, and clicks a different result — bouncing between results like a pogo stick until satisfied. Distinguished from a normal back-button return: pogo-sticking implies the user was unhappy with the first result. Whether Google directly uses this signal for ranking is debated and Google has been deliberately vague; what's clear is that pages frequently abandoned in favour of a competitor are unlikely to remain in the top positions over time. The practical advice is the same as for dwell time: write pages that satisfy the query.