It's the weeeeekend, so I had a lie in and am a tad late posting!!
Today's sentence is a two parter:
"Cor blimey, she's a right old boiler"!
'Cor blimey' = 'Oh my goodness / wow'
'Boiler' = 'a rather unattractive woman'
*Note however - boiler more commonly means a heating appliance, so this needs to be used in the right context, otherwise they'll think you're talking about the thing that hangs on the wall and heats their water!! If you mean a woman, put a name or 'she' in front of it.
I'd be careful where you use this one....lol!