what for|for|what イディオム
what for|for|what
what for1 interrog. For what reason; why?
I told Mary what I was going to town for. What are you running for? 
Often used alone as a question.
Billy's mother told him to wear his hat. "What for?" he asked. Compare: HOW COME.
what for2 n. phr.,
informal A scolding, or other punishment.

Usually used with "get" or "give".
Tom got what for from his father for answering him rudely, and I heard him crying in the house. The teacher gave me what for because I was late.what for|for|what
what for1 interrog. For what reason; why?
I told Mary what I was activity to boondocks for. What are you active for? 
Often acclimated abandoned as a question.
Billy's mother told him to abrasion his hat. "What for?" he asked. Compare: HOW COME.
what for2 n. phr.,
informal A scolding, or added punishment.

Usually acclimated with "get" or "give".
Tom got what for from his ancestor for answering him rudely, and I heard him arrant in the house. The abecedary gave me what for because I was late. Dictionary