The Ice Climbers slow glitch is a glitch performable only by the Ice Climbers in Super Smash Bros. Brawl. The glitch occurs after the activation of another character's Final Smash; even if it never actually connects with the Ice Climbers themselves. Once the Final Smash is complete, the partner Ice Climber's special effects (such as landing dust and hit sparks) will be slowed down, as if they were under the effect of the Timer item.
The effects end when one or both of the Ice Climbers are KO'd.