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>he's feelin' peaked lately
I know that one. People ask what's wrong because "you're lookin' a little peaked" with the accent on the first syllable.
>It was funny to learn that I knew Welsh derived words
>and expressions -- like "tetched in the head"
That one too. "Leave him alone, he's tetched." I think maybe we could call it "Scotch-Irish" speak.
>Swinging the lezbean phallus
That's a new one on me.
<http://en.wikipedia.org/wiki/Scots-Irish_American>