"Oh, looks like my roommate's been making his famous, weird-ass Jacos."
"What the hell is a Jaco?"
"Not bad. But who the hell puts oregano & ketchup in their taco mix?"
Girl #2: "Here he comes, JACO!!!"
Can be multiplied or divided to apply to most lengths of time, eg 10 minutes is 5 jacos, and 30 seconds is a quarter of a jaco.
Conversationally, the word Jaco can be used instead of other words such as 'jiffy' when telling someone that you won't be long.
The next train is in about three jacos.