ERK - "Erk" was created by Shrubskill when she told everyone about "this stupid dog outside" and commented about how "when it barks, it sounds like it's going "ERK ERK ERK" ". Hellie was there when she said it and commonly played with her by saying this word. This was before Skype had became their home, so it was only mentioned in a story.
DICK SALT - "Dick Salt" is also created by Shrubskill Nurse when she randomly put two words together and said them, causing random controversy and a silly inside joke. This was also before Skype was their home so it was basically related to Erk.