It means sleeping together without any sexual implications.
A: Let's soine!
B: 'kaaay *snuggles*
by lemonsocks February 11, 2011
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Exclamatory phrase which can be heard in the ghetto's of central London.
Originally used to portray joy, it is now often used in a derogatory context.

Source: Mcfly3004, London
asbo1: Ive just landed a job at McDonalds!
asbo2: Soin!, well done mate
or
asbo1: You smell like bum
asbo2: Sod off soin boy
by Mcfly3004 August 17, 2006
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Exclamatory phrase which can be heard in the ghetto's of central London.
Originally used to portray joy, it is now often used in a derogatory context.
asbo1: Ive just landed a job at McDonalds!
asbo2: Soin!, well done mate
or
asbo1: You smell like bum
asbo2: Sod off soin boy
by Mcfly3004 August 16, 2006
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when a thumb is inserted into the anus during sexual activity
shane and emily enjoy exchanging raj soin's while shane takes pictures
by tony May 4, 2004
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we held tony down and gave him the raj soin of his life
by schlubie May 1, 2004
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Came from the indian term for "thumbing" a fellow student
Professor Smith raj soined Jay for the whole class to see.
by #1 dad May 9, 2004
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In french it means "I want a pencil," but when used by Andre Nickatina it means "I have been doing crown"
Catch me if you can...j'aibe soin d'un crayon, which would really mean Catch me if you can...I been doin' crown
by The Hen February 28, 2005
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