TV
Manny thinks his dad is like Superman. The truth? He’s a total flake. In fact, the only way he’s like Superman is that they both landed in this country illegally.
— Jay · Modern Family

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker punctures Manny's comparison of his father with Superman by calling the father unreliable. The punchline replaces heroic resemblance with a claimed similarity about arriving illegally. The humour rests on the abrupt change of terms and the speaker's dismissive view of the father.
Context reviewed