An expressionusually used by chavs and the like who want to sound honest and trustworthy. Should (almost) always be interpreted as "I'm lying through my teeth".
"m8 i dont no were ur weed is i swear on me nans grave i dint steal it m8"
"kev i swear on me nans grave i aint never cheated on u"
see also: chav, charver
An exceptional friend. She will always stand up for herself and her friends and is very honest. She won't take anyone's shit and she's willing to fight you if she has to. If she doesn't like you be damn sure she'll let you know. She may be the clumsiest and most flirtatious girl you ever meet. She loves to drink, party, dance and just have a good time because she knows that's what it's all about. She doesn't care what people say about her. She can be a bitch at times. She's hot with a nice big ass. She's not an easy girl to get, if you find her you'll have to work hard to get her.
Something said by a Nanna or Grandmother that is not entirely true. Not a lie, but an exaggeration or an embellishment of the truth.
Nanna passes by a famous hospital and tells the children "I was the head of child services there when I was 25." Or "I used to live at the Drake Hotel in Chicago." is it true? We don't know, but it appears to be a Nannerism