>A few weeks ago I was talking about rhymning slang, usually attributed to cockneys, e.g.
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>"Apples and rears" = stairs, "plates o' meat" = feet, "Lilian Gish" = fish, "dog & bone" = phone. The thing is that the rhymning bit isn't said, but is understood by the listener, e.g.
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>"I'm putting on my daisies" - "daisy roots" - boots.
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>Last night I was surprised to hear, on TV, an American refer to "blowing a raspberry". If this is a common expression in the US then it would appear you use RS yourselves. This is short for "raspberry tart", so "blowing a fart"

Yes. Stick your tongue out, blow wet, and hope to make what is best described as a loud farting noise.