-verb
1. The act of talking out your ass - most likely to occur when
intoxicated2. 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.