Let rip

When she heard the news, she let rip a tirade heard throughout the office.

Ok, it’s all clear. Let ’er rip.

He let rip a fart that emptied the elevator at the next floor.

Now is the time for a bully trip, So shake her up and let her rip!

Near-synonym: let loose

She let rip with a tirade everyone heard.

She let rip about Mary’s flirting with Lizzie’s boyfriend.

I would also urge you never to let rip within 50 metres of your mother-in-law