Informal:
* "That's a load of humbug, I don't believe a word of it!"
* "All this talk about healthy eating is just humbug – I'll have a burger and fries, thank you very much."
* "Don't give me that humbug, I know you were the one who ate the last cookie."
More Formal:
* The politician's promises were nothing but humbug; he had no intention of keeping them.
* The old man dismissed the young woman's concerns with a dismissive wave of his hand and a muttered "Humbug!"
* Despite the fancy packaging and marketing, the product itself was humbug, a complete waste of money.
Literary:
* "Bah! Humbug!" Scrooge declared, turning away from the festive carolers outside his window. (This is a classic example from Charles Dickens' *A Christmas Carol*)
Remember that "humbug" carries a strong negative connotation, implying something is deceitful, insincere, or a complete sham.