The appearance of solid objects to jerk spasmodically during childhood fever (I'm told this can also happen to drying-out alcoholics)Term invented by me as a 4-year-old during a particularly strong bout of fever. Example: Poor wee Jimmy's got the chaps.
THE CHAPS
Meaning of THE CHAPS in English
Slang English vocab. Английский сленговый словарь. 2012