Washington Spokane Mission slang for a lazy
missionary who
habitually breaks the rules.
This may be derived from the New Testament passage in which the Lord
appears to Saul on the road to Damascus and says, "I am Jesus whom thou
persecutest: it is hard for thee to
kick against the pricks"
(Acts 9:5).
Then again, perhaps it's derived from the simple phrase "to
kick
back," meaning "to relax." Beats me.
See also
bucket.