yes box

Etymology
A ; origin uncertain. At least two theories exist:


 * According to folklorist, from a humorous anecdote about a Swedish emigrant to America who is told that he will be able to communicate adequately with just three words: yes, box and alright. When he arrives in New York he is sighted next to a dead body; the policeman asks him: "Did you kill this man?" ("Yes!") "How did you kill him?" ("Box.") "Follow me to the police station!" ("Alright!").


 * An alteration of English "yes boss (alright)".

Interjection

 * 1) sure thing; yes