Trinity goes into and alley and changes back to human form. She goes back to Fionna. Trinity: Watch this. *becomes invisible. Reappears behind Fionna* Alphys and I invented invisibility potion. Wanna try some? Fionna drinks the potion. She becomes invisible, then reappears. Fionna: Amazing! Trinity: Are you thinking what I'm thinking? Fionna: Prank people invisibly? *takes down her hood*