Okla. Stat. tit. 12 § 1758
No formal pleading, other than the claim and notice, shall be necessary, but if the defendant wishes to state new matter which constitutes a counterclaim or a setoff, he shall file a verified answer, a copy of which shall be delivered to the plaintiff in person, and filed with the clerk of the court not later than seventy-two (72) hours prior to the hour set for the first appearance of said defendant in such action. Such answer shall be made in substantially the following form:
COUNTERCLAIM OR SETOFF
In the District Court,
County of _______________,
State of Oklahoma.
____________________
Plaintiff
vs. Small Claims No. _________
____________________
Defendant
Claim of defendant.
STATE OF OKLAHOMA )
) ss
COUNTY OF _____________ )
__________, being first duly sworn, deposes and says: That said plaintiff is indebted to said defendant in the sum of $ ________ for _______, which amount defendant prays may be allowed as a claim against the plaintiff herein.
________________________________________________
Subscribed and sworn to before me this _____ day of _____, 19__.
______________________________________
Notary Public (or Clerk or Judge)
Okla. Stat. tit. 12, § 1758