He accidentally let the pooch out and had to chase it down the street.
Он случайно выпустил пооча и ему пришлось бежать за ним по улице.
Definitionen
To let (the) pooch out means to allow a dog (pooch) to go outside, typically for a bathroom break or to get some fresh air. It can also be used informally or humorously to refer to letting something loose or relaxing restrictions.