The debt ceiling vote will be something close to an acid test that this budget deal represents a cease fire in the budget wars.
In his new book acid test, author Tom Shroder tells the story of Nick, a veteran haunted by PTSD.
It may be painful, but this is an acid test for Republicans.
A party at which LSD is added to food and drink
To provide special effects at a party, usually of a psychedelic sort: He acid-tested his place with colored strobe lights
[Narcotics; punning adaptation of ''a final and decisive test'']