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1 definition by Simon Stafford

 
1.
BL
a shortened form of the word 'Borderline' which is used to indicate a joke or statement being sick and/or wrong, ie on the borderline of going too far in terms of general decency.
'i bet that bloke likes to rape young children in his spare time!'
'oh no! thats BL!'
by Simon Stafford May 28, 2005
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