Next door

A: Colin's gone.
B: What?
A: He went next door.
B: Oh,A. I'm so sorry. How did it happen?
A: ... He walked.
B: Right, right, sorry. See, my mum used to use "going next door" as a euphemism for being dead.
C: Whoa, hold on, does that mean my rabbit's dead?
B: It's been eighteen years, C., where did you think he was?
C: Next door!

A,B: <facepalm>