Crib is a word used by the younger generation to describe a home or a place where the person using the word finds comfort /or lives/ in the place/home the person is talking about.
DAWG, Come check out my crib sometime / Will smith
Why not bro, I'll come check out your crib / Chris brown
This a shortcut for False eyelashes, False eyelashes are something girls and other genders glue onto their eyelids for their eyelashes to look bigger / etc for any purpose.
Can you buy me some flashes from the store and some flash glue? / Anita
Yeah OfCourse i can girl i gotchu, is this your first-time wearing flashes / Cornelia