A picnic held on the side of an interstate-type highway, not always because the family's car has broken down.
On Sunday afternoon, the Thruway was backed up for ten miles by a Puerto Rican picnic.
by Pat10463 September 30, 2005
The litter created when someone eats fast food in their car and throws the wrappers, bags and cups out the window while sitting there.
I hope the street sweepers come this week. Some d-bag had a Puerto Rican Picnic from Mickey Ds in front of my house.
by Long John Slivers May 25, 2009