flapping cheeks

-verb

1. The act of talking out your ass - most likely to occur when intoxicated

2. Giving verbal agreement to do something, but not following through

3. Slang for: a lie

4. exaggerated or unrealistically magnified

At the bar, my friend was "flapping cheeks" about waking up early and getting on the mountain at 9:00 to go snowboarding. It's still noon and I haven't heard from her.

Over drinks and dinner last night, my boyfriend "flapping cheeks" when he said he would mow the lawn the next afternoon. The next day, he forgot that he had "work" to catch up on and didn't have time.

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