solely engrossed in one thing; just (one thing, no need to worry about the rest); simply; by all means; please feel free; do not hesitate (to ask for sth)[cedict]
出去
chū qùㄔㄨ ㄑㄩˋ
to go out[cedict]
鬼混
guǐ hùnㄍㄨㄟˇ ㄏㄨㄣˋ
to hang around; to fool around; to live aimlessly[cedict]