The act of crossing the 2 streams of alcohol and marijuana; a.k.a. the process of getting cross faded.
"Bro, how is Kyle already stumbling? The party just started!"
"Yea man, we were pregaming with blunts beforehand. Plus he took 3 whiskey shots as soon as he showed up."
"Ohhh makes sense, that fool's straight Ghostbustering it tonight!"