a while back, Father Steve used the term cahooting to head a thread on the word cahoots. yesterday I came across an actual usage:

".. I doubt they'd execute Dmitriev."
"Unless he was cahooting with the Pletnev kid."
- W. F. Buckley, Last Call for Blackford Oakes

(cahoot, of uncertain origin in early 1800s, was verbed ca. 1857)


edit: 'cahooting with' gets 76 googlets and one recent News hit.