i would say clean your throttle body and see if it happens any more,

or it might have just been a little bit of moisture in your engine bay, if its working fine now dont worry about it
_________________________
Red Escort 1.6LX
Then - Red Escort 1.4
Then - Silver Fiesta ST 170BHP
Then - White Fiesta ST MR200+
Now - Mitsubishi Evo IV Forged 2.3 500BHP
and Mondeo Mk3 2.0TDCI