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I used to work with a tall, lean, red-hreaded Irishman named Bloodnut O'Shea who rarely swore but used "fizzgigging" a lot. I think the original meaning off fizzgig is "pimp" but in Bloodnut's creative mind it took on a whole raft of meanings. I haven't seen the guy since about 1975 but some of his words still twinkle in the Randyan night.