It means that Hillibush puts food (like small sandwiches with no crust) in a basket and then him and his friends go to a field, or beach, or top of a mountain, and they lay a blanket on the ground and sit down and eat it. Therefore, he thinks he shouldn't be the only one and tells other people they should do the same.
In short, an activity you do with your friends.
In short, an activity you do with your friends.
Why don't you two go have a picnic.
by YepThatHappened April 5, 2015