Movies
Why am I always the one who ends up knee deep in crap?
— Maxwell Kane • The Mighty

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
This is a groan of self-pity with a crude punchline: the speaker feels that messes always find them. Being knee deep in something unpleasant works as a blunt metaphor for repeatedly landing in bad situations, and the question is more complaint than real inquiry.
Context reviewed