The first one was a catch phrase from a war-time radio program - English translation:"What can I do for you?"
As far as I know, this is a just funny play on the words "What can I do for you?". When I was a child (way back in the Dark Ages), the clerk at the shop at the corner used to say to me "And what can I do YOU for? (with a wink and a smile) when it was my turn to be served.
The second is just lazy English originated by our American cousins.