1)The skates that have replaced lemmings legs as eveloution has progressed. Dr. Hanz Yodelenheimer has theroized that the shift from legs to skates happened sometime late in 2006. Though he is perplexed as to where they got the industrial grade graphite, or the ball bearings and suspension systems for them to work.( let alone how they successfuly integrated mechanical parts into their organic anatomy ) Besides having no legs, the only significant change to the lemming population has been the greater velocity.
2) Very fast skates, making someone unusually fast on the rink.
Shit! Did you see how fast she was going? She must have lemming skates.