-tendency to use hand sanitiser too much, to the point of taking baths in it.
-refusal to wear tampons, ever.
-generally attracted to guys named scott, jack, tyron etc.
-takes their siblings with them on dates
-laughs alot a jokes that aren't even that funny, ending up clapping like a retarded seal
-is the one person in the group of friends that everyone takes the piss out of
If you meet a 'Sciacca-lakka' keep them around for when you're feeling down, because making fun of them will make you feel better.
"The way that person is laughing at that joke reminds me of a Sciacca-lakka because it's not that funny"
"That chick must be a Sciacca-lakka because she likes Scott and Jack!"