Water Skii's

Ed Atlin has a running joke about water skiing. This is probably supposed to be funny since waterskiing in Space is kinda difficult, without water.

In Ash Hole, one of the Space Tree action figure sayings is "My name is Space Tree and I like to water ski. Do do do do."
- However, Space Tree claimed that he doesn't like to water ski right after that.
In Commander in a Dress, Space Tree is possessed by Reginald, and part of the song he sings while possessed is "I like to water ski".
In Fight Right, it is revealed that the BF4L Kid doesn't like to water ski in the seventh easter egg.