[IncRnd]

> If you want to continue the sandbox metaphor, which I do like, "playing in the Fed's sandbox until the bottom fell out" might work. Or even "toxic sandbox".

All toxic substances are poisonous. A toxin is a poison produced by a living cell or organism.

Poisonous Sandbox was elegantly simple, pithy even, and quite appropriate.

[bluefinity]

While "toxin" refers specifically to a poison produced by a living cell or organism, "toxic" does not -- it's a synonym of poisonous, directly derived from the Latin word for "poisonous".

"Toxin" is a newer invention, derived from "toxic" by adding the biochemistry-related suffix "-in" to indicate toxic substances of biological origin.