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A very specific form of the 'dubstep' music genre. Hardcore dubstep beats danced to with a 'Ive just tasted lemon' face, whilst shaking your hand out in front of you.

Originiated in Market Bar, Nottingham, but has spread to several other places.
Nick: Ah, do you want to come to our postlash later?

Elliot: Nah man, I can't be arsed to listen to none of that yandlestep.
by J-aura June 22, 2011
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