New Advancement: BUMBOS BOUNCE!

Almost all of us have watched the classic clay stop animation Rudolph The Red Nose Reindeer movie by now, right? Well in it, a character called Yukon Cornelius falls off a cliff to defeat an abominable snowman, but that's not the point. At the end of the movie, Cornelius comes back to a shocked conglomerate of Reindeer and Elves, and when asked how he survives, he simply says "Didn't you hear? Bumbos bounce!" So I was thinking that a fun little reference to that could be an Advancement. To achieve this, you bounce on a slime block from 20+ blocks up in the air in an Ice Spikes biome.