1. Stop what you are doing.

2. telling someone to slow down when they make a move or speak.

3. tell someone not to be too eager to do or believe something
Not so fast. We've got to prove it first, haven't we?
by sou December 19, 2011
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He used his newly-invented sewing machine (duh!).
In a historic mid-1800's sewing-speed contest, Elias Howe was able to sew 250 stitches per minute on his mechanical wonder, as opposed to a mere thirty stitches that a group of professional seamstresses were able to make in that same allotment of time. I imagine that said fleet-fingered ladies exchanged astonished gawking stares and asked each other, "HOWE did he make stitches so fast???"
by QuacksO April 5, 2019
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so fast hey is an adj or an ad, for nonsense fast person for declaration about the same as his fastness. We are in love as Khayyam and lovers as active as Michael, and happier when we are Christie(Burg) eventually, and no body lets us may be possibly.
I render this under taker has been too /so fast hey/in putting, in us had put a memorial: He did never put the coffin,s door on top of the spirit lost man of us. Never it could be.
by man!? October 2, 2018
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