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1.
A man who attempts to seduce his friends mother.
"Andy was talking to my mum again"
"watch out for him, he's a right rayner"
by Karraro7 September 08, 2009
 
2.
one obsessed with hentai.
usually considered to be annoying by his mates.
"You are a complete rayner!"
by flib March 14, 2008