Iupi (with a capital i , not a lowercase L )
It's a joy expression, something one shout when having lots of fun (riding it!!! of course)
It's a spanish word, hence pronounce it "you - pee" (Yoopie !)
It reflects my feeling when driving, and the joy of having THE bike I really want ... It could have been "Big Grin" but in the end I prefered a spanish, single word.
'94 PC800 Black "Iupi"