Movies
Caroline, the day you see anything through to the end, I’ll stick my own dick in my ear.
— Lloyd · The Ref

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker sarcastically dares someone to ever finish anything, promising an absurd, self-inflicted stunt as the price if they do. The vulgar hyperbole works because it treats completion as so unlikely that the ridiculous forfeit is safe to name.
Context reviewed