Pre K Graduation With Twins

So last night my twin grandson's had a ceremony from Pre K and they both learned their songs during school and their poems they both knew the poems but during the ceremony one of the boys decided he was not going to participate, first I couldn't see them they were in the second line which their were only two and they are the shortest in the class and they put them in the back so I had to get up and go down front to see my babies and when I get there the oldest was there pushing on the little boy he was standing next too, after pushing then he has his hands in his pockets turned to the back of the Church while everyone else is facing the front.  I was like what in the world so I finally got his attention and told him to come here while his brother was doing what he was supposed to do, the brother walked over and grabbed him trying to get him to do what he was supposed to be doing but that didn't happen.  Nick finally came to me and I asked why wasn't he doing his poem no answer he just held me around my neck and asked for juice, really Nick I can't believe you are you going to go back up there and finish, nope he didn't want to so I took him back to my seat.  What do you do with little 4 year old kids?