Table schema:
CREATE TABLE Ref_Incident_Type (incident_type_description VARCHAR, incident_type_code VARCHAR); CREATE TABLE Behavior_Incident (incident_type_code VARCHAR)

Question: What are the code and description of the most frequent behavior incident type?
SQL: SELECT T1.incident_type_code, T2.incident_type_description FROM Behavior_Incident AS T1 JOIN Ref_Incident_Type AS T2 ON T1.incident_type_code = T2.incident_type_code GROUP BY T1.incident_type_code ORDER BY COUNT(*) DESC LIMIT 1