A term commonly used to describe students at Christchurch
Girls' High
School, it is a play on words, meaning that girl's high
girls are easy - margarine is easy to spread, as (apparently) are girl's high girls's legs
Boy from CBHS: Damn, where's she from? She's hot! And I
think she's looking at me...
Girl from AGHS:
Ah, CGHS. Why do they always
steal our guys?
Boy 2: Um, cos they're hotter than you?
Girl from AGHS: No, because they're margarine legs, that's why!