|Ice Rink Walk|
Ice Rink Walk is an add-in by DandelionCP that allows users to walk ('slide') like your penguin will do in the Ice Rink anywhere and any time. The add-in has been proven to be client-sided.
The creator, DandelionCP claims that this add-in may ban you if a moderator sees you using it, but this has not been proven yet since the add-in is not rejected and because it is client-sided.
However, the code was later challenged anyways and the add-in is now Pending re-verification.