froth at the mouth

One cabinet minister said that after months of "frothing at the mouth about apocalypse actually, maybe we could have a hung parliament. This will encourage people to believe there is a fight worth having."

“I’m not some lunatic frothing at the mouth. I got in a bad situation for about five minutes. Do you see where I’m coming from?”

I wouldn't expect it to be any more convincing than the first, though it will get huge ratings on Fox News, where the prime-time hosts will be frothing at the mouth.

From there, Shields says that "everything went black," she fell headfirst into a wall and started frothing at the mouth.

They froth at the mouth, snapping at air, eyes rolling backward and let loose blood-curdling screams.