Ok, any you've heard of you don't understand do feel free to ask here.
'handbags' - used often in the description of a fight, usually a crap fight between two participants who really can't throw a punch i.e. fighting like girls. Usage: "did you see those two lads, it was handbags stuff!"
'slapper' - refers to a female who...umm...gets more than her fair share of coitus. Same meaning as 'slag' but a slightly less offensive way of implying it. Usage: "That Tracy in Admin is a right slapper, she's slept with 3 lads last week". NB - there is no set number of encounters a girl has to have before being referred to as a slapper, but its usually more than the accuser. Jealousy may play a part.