To finish something or someone, such as a beverage or woman, very quickly. Siddalling is most effective when you are with your brother.
Man, you siddalled a keg by yourself last weekend?

That girl got siddalled.

When you finna siddall that keg?
by philliam phillips October 13, 2010
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A dominating whore-woman who sleeps with anything that has a penis. She loves Nandos more than your Mum does.
"Hey get off my Dad, your such an Abby Siddall"
by lare6456 October 13, 2011
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A fat ginger nonce who likes a girl called Lilly
He’s a real Taylor siddall
by I like kids 69 March 8, 2020
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A fat ginger nonce that wants to shag a girl called Lilly
He’s a real Taylor siddall
by I like kids 69 March 8, 2020
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