Interjection used here and there by Parents
This is the Italian version of Peekaboo, a game for infants. To play, the parent hides their face behind their hands and then pops back into the view saying the word bubusettete and so surprising the kid.
"Bubu...settete! Eccomi qui!"
"Peekaboo! Here I am!"
7 out of 11 Italian speakers have heard this