This is usually commonly used against our Burberry-loving friends, the typicalchav. Basically, it's when a fourteen-year-old chav thinks he's a pimp because he's had 6 twelve-year-old schoolkids because he can't get any action anywhere else. Instead of the word, 'pimp', we replace it with 'hetty'.
Maison: Oi Lee, i got me sum pusseh last nite boyacasha!
Lee: Ah me bredwin ya fuck Kerry from Maccy D's nigga?
Maison: Nah m8 nah, her 4 lil' sistaz man innit! Ai!
Derived from Hetty Wainthropp, a retired working-class woman who has a knack for jumping to conclusions. A 'Hetty' is finding an obscure, tentative and often completely ridiculousreasoning to an event that has taken place.
Jimmy: Oh no! The whole computer network has gone down and I was on for a high score in bubbles. How has this happened??
Caz: Well I saw Tommy eating a sandwich earlier which we all know he never normally does, he's a wheat crunchies man. He must be responsible for this.
Claus: Oh hello, Caz is doing a Hetty again! The hoe...
Usually signalled by a quick glance at a watch/clock. Often coupled with a look of complete disinterest.
The 'Kaiser Soze' is the male version of this act.
----------------------------
Guy1 : Wheres that girl?
Guy2: I don't know. I saw her looking at her watch - maybe she pulled a Hetty.
---------------------------
John/Kate: Its 10.55 I think I'll Kaiser Soze/Hetty at 11.00 sharp.
A hilariously cheesy extremely British mystery show about a "spunky" detective lady in her 60's that acquires Geoffrey Shawcross Dominic Monaghan as her sleuth sidekick...an incredibly cute 19 year old sidekick...who is still incredibly cute as a widdle owd hobbit...
Ran from 96 to 2000 (not sure, check on IMDB)