Generational Gap 

When your sister posts naked pics of herself on the internet, then claims you don't understand the industry she is in.

-Hey Fred, out in L.A., we use those pics for our industry, you just don't understand! There must be a Generational Gap.
-But Rebecca, you work in Social Media!

Generational Gap by LACool July 28, 2018

Generation Gap 

When someone has a big gap between their front two teeth. E.g. Michael Strahan

Did you see that girl's generation gap? Man it was huge.

Generation Gap by f the police October 30, 2010

Generation gap 

In today's usage, it refers to a perceived gap between younger people and their parents or grandparents.

Generation gap should have been solved in the future

Generation gap by Ryan900USAYT January 6, 2023

generation gape 

(v.) -- to gaze stupidly or in open-mouthed surprise or wonder at someone from another generation for doing or saying something completely surprising or incomprehensible due to the generation gap.

"Whenever I say something old-fashioned to my teenage sons, they just look at me in a totally befuddled way and then generation gape at me in wide-eyed wonder. 'Oh Dad, please!' is what they are thinking, I'm sure!"

generation gape by PRwiz101 March 15, 2012