James Corden is not happy with fellow late-night host Bill Maher for a recent segment that encouraged fat-shaming as a method to combat the obesity epidemic.

Last week on Real Time With Bill Maher, Bill suggested that fat-shaming needs to make a comeback, criticizing folks who support larger sizes as a form of body image activism.

That’s when James hit back:

“We know that being overweight isn’t good for us,” James said. “I’ve struggled my entire life trying to manage my weight and I suck at it. I’ve had good days … and bad months. I’ve basically been off and on diets since as long as I can remember and, well, this is how it’s going. But here’s the thing: We’re not all as lucky as Bill Maher. We don’t all have a sense of superiority that burns 35,000 calories a day.”

Ouch. Watch more below: