Windbag

He's an old windbag, you can't believe a word he says.

The community pastor wasn't a fiery preacher, but rather a talkative windbag and bore.

Tom is a windbag.

He found the speeches tedious enough, and thought Sir John a dreadful windbag.

Some windbag. Hell, ain't I seen your kind before? ... Some bag of wind. You're just hot air, that's all.

"Do you hear that, Ryan? Your mommy is being a pontificating windbag."