I t is more than just drop off only there  is a/the base of them
https://scontent.ftxl1-1.fna.fbcdn.net/v/t1.0-9/19875512_1860595627592845_6242736088406098187_n.jpg?oh=94eca497253f3e028ca6279efb8871dd&oe=5A0F7058