When somebody says, "MY SHIP IS SINKING!!" That means the couple you "shipped" don't love each other, or broke up, etc... and when somebody says "MY SHIP HAS SAILED!!" It means the couple are now dating, or loving each other, etc..
(Ima be my evil form..Ima just call her chara for now cause evil ver of frisk in undertale is chara and blah blah blah it just makes sense. WAIT NO-- I'm call her "scream"
Dust:........Thats.....Nice! Thanks! She was extremely annoying! *pats her on the shoulder* Thanks, you did me a favor, I owe you.
Mallow: FIGHT FIGHT FIGHT-
Echo: :D