The act of smoking weed out of a bong slide because there are no other available devices to be smoked out of.
This practice is only followed by those too cheap to buy rolling papers or buy a $5 pipe from the corner smoke shop
James: "Dude do we have a pipe or papers?"
James: "Well then looks like we're bong sliding tonight"
To smoke marijuana out of a bong slide due to the lack of other available smoking apparati
James: "Dude let's get stoned. Give me the bong or some papers."
Cole: "Bong's broken and no papers to be found, bro."
James: "Looks like we're going bong sliding tonight"