After weeks of hard-labour and little rest, words and comeback's become a stuggle to dish out, so instead the phrase "blaw" was created to stop this akward silence and to offend my other workmate.
The combination of the two words; bloody and awful. It is used in the most extreme of situations when the problem cannot be described as just awful. It needs a suitable adjective to express and create more emphasis. It is the direct opposite of blawesome