Characters
I didn't sell out son, I bought in.
— Stevo's Father · SLC Punk!

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker rejects selling out as the description of their choice, replacing it with buying in. The verbal reversal presents joining a system as a deliberate investment rather than a betrayal of principles. Addressing someone as 'son' gives the defence a knowing, self-assured tone.
Context reviewed