Characters
I have my pride. Okay, I don’t have a lot of my pride, but I have enough so that I can’t do this.
— Xander · Buffy the Vampire Slayer

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker claims some self-respect, then immediately admits it is in short supply. Still, they insist enough remains to make one particular thing impossible. The joke is self-mockery: pride is a thin reserve, but it stops them at a firm limit.
Context reviewed