"look at him, he's bost after that pint  "he's gone in the head, totally bost"  "mate, your car is bost, didn't you see the bus coming"?"
'bost' when someone or something has gone wrong
""look at him, he's bost after that pint  "he's gone in the head, totally bost"  "mate, your car is bost, didn't you see the bus coming"?"" What is the definition of "bost"?