1. deceiving or tricking someone with false or misleading statements
Usage: present participle of humbug
2. expressing annoyance or impatience with something considered nonsensical
Usage: informal; often used as an exclamation

Examples

• Stop humbugging me with those fake statistics.
• The politician was humbugging the voters with empty promises.
• She accused him of humbugging her about his qualifications.
• The old man was humbugging about the noise from next door.
• They’re just humbugging you to get your money.
• He kept humbugging about the new regulations at work.