點解有人講野講到口疾疾講唔順會叫「食螺匙」﹖

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因為當上螺絲的時候會發出「咦咦at at」的聲音，廣東人就將這種聱音比喻為人們說話結巴，講野「咦咦at at」。

「食螺絲」出自香港演藝人行內術語,意思係有如口內含著螺絲說話,無法清楚。

http://hk.knowledge.yahoo.com/search/search_result?tab=0&p=%E9%A3%9F%E8%9E%BA%E7%B5%B2

食螺絲 = Screwed-up

Screwed-up is a less offensive way of saying someone made a mistake in the US. The offensive way is "fxxxed-up" Think about it...screw vs. fxxx are the same. Just remember, quite a few HK expressions have their origins from the US and to a less extent, Europe.

如果我冇解錯呢, 其實係因為你用手上螺匙嘅時候, 係要一吓一吓, 咁就好像有d人講嘢咁窒吓窒吓囉....唔順暢咁既意思