Thanks. Our language on the matter is very specific, and we are very explicit about that policy both in the contract paperwork and in our verbal communications.
Even so, I'd say 3 of 5 clients try to pull the "we haven't been paid yet, we can't pay you" bit. At which point I remind them of their initials on the contract acknowledging that they understood that particular point.
Bottom line, I refuse to let their cash flow issues become my cash flow issues.
That's a good way to state that. I hadn't thought of that way to state the exact sentiment.