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Costa Del Your Maw- rather than the usual scottish slang insulting remark of "yer maw" , a modern day cultured version of the phrase is used by inserting "costa del" at the start. Normally the phrase is used by hispanic teenagers in Scottish modern studies classes .
Girl: yo kelly bhoy!

Girl2: shut it ya chuggington

girl 1: Aw no she didn't ... go Costa Del Your Maw!
by vickydoll#1 February 24, 2013