passing troo

 

Excerpt from 

Raver's Dictionary of Phrase and Fable (1996 edition)

passing through  

(sometimes pronounced "passing troo" or "passing truh";  modified variations include "just passing through")

Rave buzz-phrase usually voiced by an MC either live at a rave or on a show broadcast by a pirate radio station. 

Evokes the transitory mode of the raver, moving through a club, or moving between clubs during the course of a night. It could also apply to a DJ or MC who has several engagements that night and thus is just passing through one particular club / rave on the way to another.  

Possible undertone of soundwaves (or radio waves) passing through the crowd body, through building walls and across the city.  

Some more fanciful observers of the raving culture have detected a near-mystical existential undertone to the phrase, viz. the transience of life itself.