A generalization of a person, scene of people, or event that is essentially lame, a cliche, overrated, worthless, overused, amateurish, self righteous, arrogant, condescending, for simpletons.

Yeypants might be amidst a demonstration, showing off, telling someone what or how to do something with a gleem of excitement, bragging, wearing fancy jeans, boasting or maybe simply strutting their stuff quietly or loudly, but in such obsolescence that it is just yeypants.

When you eat dirt for the first time and leave your family to build a shack in the woods