I'm thinking the BLX has to do with "bollix."

This according to my online dictionary. Stapfam can correct me. He actually speaks English:

Verb 1. bollix - make a mess of, destroy or ruin; "I botched the dinner and we had to eat out"; "the pianist screwed up the difficult passage in the second movement"
Synonyms: botch, bumble, fumble, botch up, muff, blow, flub, screw up, ball up, spoil, muck up, bungle, fluff, bollix up, bollocks, bollocks up, bobble, mishandle, louse up, foul up, mess up, fu*k up