Jaco - A jaco is two minutes. You can use it to measure time, like

A jaco is two minutes. You can use it to measure time, like when you’re being lazy and saying you’ll be back in a jaco.

I’ll be back in a jaco, don’t wait up.

You said five jacos, and I’ve been waiting for ten minutes.

I’ll be done in a jaco, just don’t leave me hanging.