Chris Bumstead, widely known online as CBum, is a Canadian bodybuilder who dominated the Classic Physique division at Mr. Olympia during the late 2010s and early 2020s. His nickname became shorthand in fitness culture for disciplined training, classic posing and an approachable gym personality. Short clips and sounds using his name circulate widely in workout edits, gym memes and bodybuilding communities, where fans use them to signal a peak physique moment. That shared recognition keeps the reference useful long after any single video fades.