Bosch is a term used mainly among neds, it is a greeting like "neebor" or "mate" that can be used for anyone, it jus makes it easier when you are takin wiv people.
a very affluent person. can also be used in adjective form.
shouted alone, the word "bosch!" can be used as a justification for only carrying plastic (credit cords, mate) or making a reference to not being a focking skobe or pleb. the phrase can be teamed brilliantly with a smug look on ones face.
must not be confused with "bosh" which is merely a focking douchebag's attempt at distinguishing bosch(ledge) with bosch(kitchen appliance brand). However this is highly unnecessary and not well received amoungst the truely bosch community.
to carry out an art. It is not based on mere physical aggression, but craft, technique and timing. When one is bosched, they will end up humiliated on the floor, completely bossed but their body will carry no lasting damage.
Christ Pete is your leg ok? It's all cut up the shin.
Yeah man sure it is (bollocks), George just bosched me that's all.