silly question

[Steven Michelsen <stevenm@optonline.net>]

OK here is a silly question.

I am at a stop and prepare to go forward.  The clutch is in.  I put it in 1st, 
let out the clutch and give the car no gas.  The car moves forward slowly in 
1st.  I stamp on the gas rather than ease onto it.  Instead of taking off, the 
engine revs drop to almost zero.  I then let my foot up a bit and the car goes.

Why did the engine not respond by taking off when I abruptly stood on the gas?  
Was it just bad form?  Or does my weber carb need a tweak? 

Steve