Movies
(singing) When you're a Jet, you're a Jet all the way!
— Riff · West Side Story

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The sung line presents being a Jet as an identity that admits no halfway commitment. Repeating the name strengthens that insistence on belonging. The phrase 'all the way' makes membership sound complete and enduring, rather than something taken up only when convenient.
Context reviewed