Across the alley is a reference to cutting yourself self-harm is defined as the intentional, direct injuring of body tissue, done without suicidal intentions. this one refers to the most common form of self-harm is using a sharp object to cut one's skin going across the arm and now down the arm

(note: not "across the street" that's slitting wrists)

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.