bullfrogs, rain v phr For varr see quots chiefly Sth, S Midl See Map To rain very hard.
1954 Harder Coll. cwTN, It’s raining bullfrogs and pitchforks. 1965–70 DARE (Qu. B26, When it’s raining very heavily, you say, “It’s raining _____.”) 27 Infs, chiefly Sth, S Midl, (Down) bullfrogs; MO19, MT5, PA78, TN23, Pitchforks and bullfrogs.