My chequered history

MAGS: Look at that there, Lucy, see that sign?
LUCY: ...
AOIFE: What sign, what?
MAGS: Lucy?!
SARAH: [Reads] "Please do not drive vehicles over grass areas" Wait, what?
AOIFE: WHAT?
SARAH: Did you drive your car over the green in Mags' estate??
AOIFE: WHAT??
MAGS: She's a knacker!
AOIFE: WHAT IS GOING ON??

LUCY: In my defence, it was dark, no one was around and this estate is ridiculously confusing. And it was aaaaages ago. We clear?

MAGS: No. Knacker.
AOIFE: [Whimpers] What?