window licker

noun

window licker

noun

1

UK, Offensive, Slang A mentally handicapped person.

I bet his family are a bunch of window lickers.2005, Rob Blonde, T-Shirt Theory: What Girls Have in Common with T-Shirts:
...because too much of this Far-Right-Racial-Purity malarkey and you'll end up as a nation of window-lickers.2008, T Edward Devilish, Kingdom of the Burning Cow:

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