I've seen this word a couple of times in twitter and I've not gotten a clear definition. A friend of mine wrote a mock British text that went like this "al av ya mum ya larl cunt" so that might give context.
Learn English – British slang: larl
british-englishslang
Related Solutions
"Taking the piss" simply means "making fun of" in its usual context. It's a very common expression within Britain, but probably rare elsewhere. ("Taking the mickey" is a similar, slightly sanitised version, that perhaps is used elsewhere?)
The Wikipedia page gives a fairly good overview.
Best of my knowledge, the "wot wot" verbal tic is specifically British, Georgian and definitely an upper-class marker.
Indeed, one of the most famous adept of this "wot wot" verbal tic, was George III (the one of the American Independence), as seen in the film "The Madness of King George" (recommended).
I did not count them but the script puts tens of these "wot wot" in the mouth of actor Nigel Hawthorne. And they seem to apply indifferently to both insignificant everyday life events and to important political matters. This trait contributes to depicting a King in constant need of approbation from his entourage, often assailed by doubts that he is fit for the task laid on his shoulders, at times prone to hiding behind authoritarianism but actually unsure of being genuinely perceived as the first really English king of the Hanover dynasty.
Significantly enough, he is, best of my recollections, the only character in the film afflicted with this verbal tic. This is by no means sufficient to conjecture that he might have started the trend. However, if the film is to be trusted on the subject, he must certainly have amplified it. Even more so considering the length of his reign (as there is apparently a rule about mad kings in both France and England that they should enjoy a long reign ;-) )
In some of today's British upper-class circles, you can still hear it in the form of a single "what ?", added at the end of a short colloquial sentence as a short way of asking "what do you say ?" in the context of an invitation.
An example usage would be: "Let's go for a walk, what ? [what do you say]" or "a storm is brewing, what ? [what do you think]". Since it is perceived as old fashioned and slightly snob, it is gently mocked in plays, shows and popular culture and has also now become a cliché.
Either around the time of "King George" and the "red coats", or may be later (but that would not be "wot wot" but "what") this stereotype might have been extended in the United States to the whole British people (conjecture again I'm afraid).
As an aside, there are in English, many other regional verbal tics whereby people interject a word at the end of a sentence in order to ask for approbation.
- In Canada for instance, they say "eh?" a lot. It's like sending an invitation for "empathic approbation", and it has also become a stereotype. "The Canucks can't loose that one, eh?"
- In Singapore it's "one" or "lah".
"It's gonna rain again, lah. I'd better stay at home, one". In this case it means something like "Don't you think ?" or close to "I'm pretty sure about that." - In the US, you can sometimes hear some people frequently interjecting "like" at the end of sentences and even sometimes in the middle. In this case I think the semantic need is one similar to the more common "you know": asking for permission no to elaborate. I have no idea however, how it came to be "like".
Best Answer
For the sake of completeness:
al = I will -> I'll -> ah'll
av = have -> 'ave (in this case have has overtly sexual connotations as in "have sexual relations with")
ya = your -> ya'r -> ya
mum = mother (not really slang)
ya = you -> ya
larl = little -> lirle -> lahrl
And the last word is so commonly used I feel I need not explain it :)
As I said in the comment, but also for future reference: do not use sentences like this unless you are in really intimate company. Not all strangers are likely to react well to statements of this kind :)