When guy A owes guy B money...

[2952-0-0]

When guy A owes guy B money, that's not guy A's problem. That's guy B's problem.

[opebo]

B obviously, though unfortunately in our Police State the government often intervenes with force upon guy B's behalf (since he is usually the richer one).

[Gabu]

Both, given that it's directly B's problem, since he's going to want his money back, and that A is probably going to indirectly get a problem of equal or greater magnitude from that fact if B decides he's not going to wait any longer.

If B decides that he doesn't feel like getting the money back, then it's purely B's problem, but not unless that point is true.

[MasterJedi]

Guy A because if Guy B can prove it Guy A will have a fun time in court.

[7,052,770]

both

[Blue Rectangle]

An aphorism I've heard goes like this:

If someone owes you one thousand dollars, that's their problem.  If someone owes you one million dollars, that's your problem.

[MaC]

I'd have to read the full context in which it's being said.  People (like Dean) are good at picking and choosing parts of what they want to hear.