I have found that super-productive days are usually followed by two and even three days when I can hardly write a word.
You know the old saying that when things sound too good to be true, they usually are?
The North Koreans are usually willing to talk for various reasons: to get aid, to divide their adversaries, to create confusion.
late 14c., from Old French usuel (late 13c.), from Late Latin usualis "ordinary," from Latin usus "custom" (see use). The usual suspects is from a line delivered by Claude Rains (as a French police inspector) in "Casablanca" (1942).
A person who uses narcotics, esp an addict (1950s+ Narcotics)