What is Solo-act?
1.
When someone does something stupid by themself.
They either choose to, are force to, or symply end up proceeding alone on a mission that shows very little likleyhood of a non-negative outcome.
"I'm not riding along for this death-defying stunt! Better make it a Solo-Act, man!"
"Johnny went on some kind of Solo-Act last night and ended up in jail."
"Fuck it! If nobody wants to roll with me, I'll do a Solo-Act! Then I don't have to split the money!"
See