timothy couldn't hold his piss in the cab ride, so he had to chug 'n' drain
when going into town in a cab and you need to urinate, you chug your bottle of booze and proceed to use it as a container for your urine
"timothy couldn't hold his piss in the cab ride, so he had to chug 'n' drain" What is the definition of "chug 'n' drain"?