Hillside Picnic Share definition Flag The act of taking a girl out for a picnic and end with eating her out on the Hillside. Ash took Cherie out for a Hillside Picnic only she didn't know it wouldn't involve food. Hillside Picnic by Buttershot April 28, 2011 0 0 Get merch Get the Hillside Picnic mug. Buy Now — $32.95 See more merch