B737 FLT CREW EXPERIENCES STICK SHAKER AT 1000 FEET ON DEPARTURE WHEN FLAPS ARE RETRACTED PREMATURELY.

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AT 1000 FT CLEAN-UP ALT ON THE DEP; I WAS THE PF AND HAD TURNED THE ACFT TO THE L TO INTERCEPT THE RADIAL AND THOUGHT I CALLED FOR FLAPS 1 DEG; CLB THRUST. I MADE THE CALL AT THE SAME TIME TWR HANDED US OFF TO DEP CTL. WE ENTERED IMC AT APPROX 300 FT AND WERE IMC AT THE TIME. I DID NOT VERIFY THE CAPT (PLT MONITORING) SELECTED FLAPS 1 DEG. AT APPROX 180 KTS; 14 DEGS NOSE HIGH; THE STALL WARNING SYMBOL APPEARED AT APPROX 12 DEGS AND I GOT A MOMENTARY STICK SHAKER. I IMMEDIATELY RELEASED BACK PRESSURE TO APPROX 10 DEGS AND STICK SHAKER CEASED (LESS THAN 1 SECOND). I SAID SOMETHING TO THE EFFECT OF 'WHAT THE' AND THE CAPT LOOKED OVER AND SAID THE FLAPS WERE FULLY RETRACTED. I DO NOT REMEMBER IF I HAD INADVERTENTLY CALLED FOR FLAPS UP INSTEAD OF FLAPS 1 DEG AND I REMEMBER USING HAND SIGNALS IN ADDITION TO CALLING FOR THE FLAP REPOS SINCE ATC WAS TALKING AT THE SAME TIME AND I HELD UP 1 FINGER FOR 'FLAPS 1 DEG' AND MOTIONED FORWARD FOR 'CLB THRUST.' I DON'T KNOW IF THAT MOTION WAS MISINTERPED AS 'FLAPS UP.' AFTER REDUCING BACK PRESSURE AND STICK SHAKER TERMINATING (LESS THAN 1 SECOND) ACFT ACCELERATED AND CLBED NORMALLY. NO OTHER ADVERSE INDICATIONS WERE ENCOUNTERED. IT IS COMMON FOR TWR TO SWITCH US TO DEP CTL AT 1000 FT AT MOST ARPTS WHICH IS WHERE THE ACFT IS BEING RECONFIGURED. RECONFIGURING AT 1000 FT IS ALSO COMMON AMONG MOST CARRIERS; SO I DON'T REALLY KNOW WHAT COULD BE DONE.