“It’s not a Friday morning unless you’ve seen Bowie’s ass” referring to David Bowie’s China Girl video. Means that you can only have a friday morning if you’ve seen Bowie’s ass that day.
Ugh I’m so annoyed that it’s not a Friday morning.
The phrase associated with a very trashy girl: a shorter version of saying "that girl is trashier then friday morning garbage day".
*girl with awful spray tan complaining about facebook drama walks by*
John: Man, this girl is forsure a Friday Morning
Randy: yupp.