Flapping their gums

When someone is said to be “flapping their gums” it means that he or she talks a lot about topics he or she doesn't really understand or know about. It also means to say something but not really mean it.

Frank and Joe are always flapping their gums about what it's like to be street hustlers, when they have never even been out of the burbs.

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triple flap gum gum buster

The specialty technique earned through academia studying dentistry

The nurses implored to come now in order to administer the triple flap gum gum buster

flap that gum

What Mr.Pierson says when people are talking even more

Student: |￣ ＼
| )
＼ _＿ ノ\
＼ _ノ\
＼ ノ \
＼ ノ \
＼ノ\ ￣＼
￣＼ ＼＿
＼＿ open your cheeks I have the answer. Mr.pierson FLAP THAT GUM OFF.