look up any word, like hipster:
 
1.
'And yeah' is a highly recommended phrase to use at the end of any sort of presentation.
Anna: Researchers have concluded that lions are indeed extinct. And yeah.

Ms. Brown: That was the most beautiful thing I've ever heard.
by bAcOnLoVeSeMiLy October 08, 2013
 
2.
Any thing that you cant say in frount of adults.
I "and yeah'ed" so much last night i don't remember how i got home