Had he just asked a girl on a date?! And did she just say yes?! Bart had to concentrated on sitting perfectly still, otherwise he would have run out of the house and-- forget it, he was going to do just that.
Between the words 'yeah' and 'sandwiches', Bart dashed outside and ran in circles around Barry's house, whooping and hollering. He was back before Kara could finish 'wiches'.