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This means Yuch Y Fi in Welsh simply meaning Yuck! in English.
Claudia - Oh my! there's poo on the floor!
Jean - YYF!
Claudia - Go and clean that up now!
Jean - YYF! no way!
Claudia - YYF! it's an my hand!
by ===Idontknow=== October 27, 2007
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