[Sweeney Todd and Mrs. Lovett buy what appears to be Pirelli's Miracle Elixir]
Sweeney Todd: [opens the lid] What is this?
Mrs. Lovett: What is this?
Sweeney Todd: Smells like piss.
Mrs. Lovett: [sniffs] Smells like, eww!
Sweeney Todd: Looks like piss.
Mrs. Lovett: [unison] I wouldn't touch it if I was you, dear.
Sweeney Todd: This is piss. / Piss with ink.