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Pretty much slag development year, the year where the innocent ones turn into sluts. Barely anyone leaves with their virginity , abit like Ibiza but less exciting.
Matt: have you seen Helen, she's such a slag!

Megan: yup, she must have experienced year 9
by Scotlandforlife March 20, 2017
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13-14 year old Little kids that think they can do what they like just because they’re in the top of lower school.
They’re all slags and the year 11s will try and get with em because they know they will do whatever the say.

Last year you can mess around and do whatever before you go through two stressful years.
Year 11: are you getting with that year 9 girl
Year 11 2: yup she’s proper fit and she does whatever I tell her
by Whateverulikeuno July 22, 2018
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