A sexual position/action in which the woman rides a bmx bike with the man standing on the back pegs. Then the man flops his dick over her shoulder and she turns her head and sucks it.
A remix to Mike Jones' "Still Tippin."-
"Cock sippin' and Blow Blow. While on a HARO."

or

"Dude, yesterday I picked up Jill on my Haro bike. And I let her drive so she could be Cock Sippin'
by T9X July 10, 2009
Get the Cock Sippin' mug.