The full monty, means the 'whole thing' of anything ie English breakfust, but it was ALso the title to a saucy film!
Boll**** is a rude word describing a mans bits !!
Knacker comes from knackers yard, the place horses were taken to be turned into glue because they were knackered or old/past it. The word used now is I'm knackered.
Blinking IS probably a politer version of 'blimey' which is a curse word, actually meaning 'blind me' so some people did not want to say that!!
Posh means something rich/royal people have/do/eat ect.
Bloody is a curse word, taken from the christian faith, it is blasphemy and is also followed by the word hell. the bloody is of course Christs blood.
Minging probably derives from 'minge' an extremly unpolite word , not rude, but impolite to describe a ladys bits, minger means bad or smelly. Not nice!! of all impolite or curse words/slang It is a word, I personally do not like.