Popularised by the opening line of the seminal hit ' Temperature' by Sean Paul. The phrase: 'The gyal dem Schillachi' can be translated to: 'The girls are attractive' or variations to the word attractive.
More popular and urban synomyns include:
Buff, boom-tings, Choong,
Wa-wa-we-wa (said in a Khazak accent), Buff tings, Fit,
Hot.
Common opinion sways toward the word having a temperature related meaning, given the name of the song.
Hot, Tshhh (as in poking a finger on yourself and saying Tshhh! i'm too
hot!).