A way to describe the type of fast growth that VC likes which is up and to the right like a hockey stick. When pitched by founders, it is often accompanied by a y axis that isn't labeled or a growth percentage that doesn't include initial value.
Matthew: We experienced 1200% user growth in the past week. Our growth is as hockey stick as it gets.
Sam: How many users did you start off with.
Matthew: You know... I didn't need to take this meeting. VCs are lining up to fund me